What's your favorite form for each of the main Heisei Riders?
 

For me, it goes:

Kuuga: Ultimate
Agito: Default
Ryuki: Survive
Faiz: Accel
Blade: King
Hibiki: Default
Kabuto: Hyper
Den-O: Sword
Kiva: Default
Decade: Default
W: FangJoker
OOO: Putotyra/Tajador/Shauta
Fourze: Base States
Wizard: Infinity
Gaim: Orange/Kachidoki/Kiwami
Drive: Type Speed/Type Tridoron

I've got a very similar list, although I feel like there's a lot of limitations here seeing as some of the main riders have very few forms. I think this thread might support more options if it was generalized to favorite Rider suit designs for each year, secondary (and so on) included. So forgive me, but I'm going to do that instead. :p

Kuuga: Ultimate Form
Agito: Ground Form
Ryuki: Knight
Faiz: Default
Blade: King Form
Hibiki: Ibuki
Kabuto: Rider Form
Den-O: Sword Form
Kiva: Default
Decade: Default, I suppose. (Although technically probably Kabuto or Hibiki form.)
W: Fang/Joker
OOO: Tajador Combo
Fourze: Meteor
Wizard: Infinity Style
Gaim: Kachidoki Arms
Drive: Type Tridoron

Ohhh let's see....

Kuuga: Rising Dragon
Agito: Default
Ryuki: Survive
Faiz: eh... I don't like all of them tbh, but Default is okay, I guess.
Blade: Ace Form
Hibiki: Default
Kabuto: Rider Form
Den-O: Strike Form- though, if we just take the regular Den-O, Liner
Kiva: Default or Garuru
Decade: Default
W: LunaTrigger
OOO: Tajador
Fourze: Elec States
Wizard: Flame Dragon
Gaim: Orange Arms
Drive: Type Speed

...ugh... I'm so boring xDDD

Kuuga: Rising Ultimate
Agito: Burning
Ryuki: standard
Faiz: Blaster
Blade: King
Hibiki: Kurenai
Kabuto: cast off
Den-O: Gun Form
Kiva: Emperor
Decade: base form
W: HeatTrigger
OOO: TaMaShii
Fourze: Rocket States
Wizard: Hurricane Dragon
Gaim: Kachidoki
Drive: Type Wild

Kuuga - Amazing Mighty Form
Agito - Shining Form
Ryuki - Survive
Faiz - Base Form
Blade - Jack Form
Hibiki - Armed Hibiki
Kabuto - Rider Form
Den-O - Sword Form
Kiva - Kiva Emperor
Decade - Base Form
W - FangJoker
OOO - Tajadol Combo
Fourze - Base States
Wizard - None
Gaim - Kachidoki Arms
Drive - Type Speed

All of them? Alright then.

Kuuga: Mighty (The original is the best)
Agito: Burning
Ryuki: Survive (He only had the one form)
Faiz: Blaster (I'm a fan of OP)
Blade: King
Hibiki: His base form, if it had a name.
Kabuto: Whatever his power-up was called. I don't remember.
Den-O: Climax (Because he's always there)
Kiva: Garuru, I loved him so much.
Decade: Complete
W: Extreme Gold
OOO: SaGoZo
Fourze: Meteor Nadashiko States
Wizard: Infinity, Missing Piece, Come Back to Me
Gaim: Kachidoki
Drive: Type Trideron

Kuuga: Mighty. Simple and not complex.

Agito: Shining. I like how the white, red, black, and yellow are composed.

Ryuki: Blank. Did you see episode 1? That was hilarious.

Faiz: Blaster. There is too much grim dark in Faiz, and Blaster stands out.

Blade: King. It is so boss.

Hibiki: Kurenai. Armed doesn't really work for me.

Kabuto: Rider form. no comment.

Den-O: Plat Form. Dino Charge may have their shovels but Den-O was the first to start the improvisional weapon, aka that broom. #iseeyourdinoshovelandraiseyouatrainbroom

Kiva: Garuru. Color scheme and sword in the mouth was cool.

Decade: default. He's the destroyer of worlds. What else do you want from the guy.

W: Cyclone Joker. Paying tribute to the two primary colors used for Kamen Rider 1 and 2 was a good pull.

OOO: Gatakiriba. That cloning technique. *drops mic*

Fourze: Magnet. Reminds me of this guy.
http://www.he-man.org/assets/images/...man23_full.jpg

Wizard: Infinity. That platinum.

Gaim: Kachidoki. Really reminded me of this guy whenever Kouta was gung ho as this form.
https://www.youtube.com/watch?v=FpE_STh3E8I

Drive: Wild. I like the black armor and silver under-armor.

Kuuga: Ultimate
Agito: Shining
Ryuki: Default
Faiz: Regular
Blade: King
Hibiki: Default
Kabuto: Hyper
Den-o: Gun form
Kiva: Garuru
Decade: Default
W: Cyclone joker
OOO: Putotyra
Fourze: Fusion
Wizard: Infinity
Gaim: Kachidoki
Drive: Type tridoron

Kuuga: Rising Titan
Agito: Trinity
Ryuki: Survive
Faiz: Axel
Blade: Jack
Hibiki: Armed
Kabuto: Hyper
Den-O: Super Climax
Kiva: Flight Style (if it doesn't count then DoGaBaKi)
Decade: Violent Emotion
Double: Xtreme
OOO: Tajadol/Burakawani
Fourze: Rocket Drill States
Wizard: Flame Dragon
Gaim: Jinba Lemon
Drive: Tridoron

Kuuga: Dragon
Agito: Shining
Ryuki: Default
Faiz: Axel
Blade: Ace
Hibiki: Armed
Kabuto: Rider
Den-O: Wing
Kiva: Garulu
Decade: Complete
Double: FangJoker
OOO: Tamashii
Fourze: Rocket States
Wizard: Hurricane Style
Gaim: Banana Arms
Drive: Type Special

Kuuga: Amazing Mighty (I love the simple black and gold, lacking the spikes Ultimate has)
Agito: Ground (I'm a sucker for gold)
Ryuki: Default (Survive is meh, Blank isn't anything special)
Faiz: Default (His basic look is just beautiful)
Blade: Ace (This one was difficult for me to pick since I love them all. But the blue and silver works so well)
Hibiki: Armed (I love Hibiki's look, but Armed just pops so well that I had to pick it)
Kabuto: Rider (The thin look, the beautiful red, and the wonderful design)
Den-O: Wing (Sieg is the greatest thing Den-O has given us)
Kiva: Emperor (Kiva form looks nice and all, but Emperor...Wow. Love it)
Decade: The Garbage Bin
Double: CycloneJoker (It was a close decision between that and FangJoker, but the original look is just so wonderful~)
OOO: TaJaDor (ANKH!)
Fourze: Elec States (I just found the Elec states to look so much better than all his others, Base States being a very close second)
Wizard: Infinity (Infinity's weird head shape did deduct some points, though)
Gaim: Ichigo Arms (I saw strawberry and fell in love)
Drive: Type Speed (Didn't get far enough into it to see the others in action, while screenshots have left me unimpressed)

Kuuga- Mighty form. Its so simple yet very unigue
Agito- Ground form. Gold and black work so well and i like the shoulder pads
Ryuki- Survive. I just think Ryuki's base form is too bland.
Faiz- Base form. Pretty much the opposite of Ryuki
Blade- King form. Gold and black again but with an emphasis on armor which i dig
Hibiki- Base form. Haven't see a lot of hibiki but the purple is unique for a main rider
Kabuto- Rider form. Very simple but effective.
Kiva- Emperor form. It just works.
Decade- Base form. I like armored look, i like the slates in the helment, and the pin- i mean magenta pops out at you
W- CycloneJoker. Great looking and I really like the green
OOO- TaToBa- I am really into traffic lights alright jk
Fourze- Base form. All of his other forms do not look good to me
Wizard- Flame Style. Wizard is many things but having a bad suit design is not one of them.
Gaim- Kachidoki. Heavily armored samurai warrior! And he's ORANGE!
Drive- Type Speed. It's the best lookng form IMO

1. Kuuga - Ultimate. Maybe the closest we have to an actual SIC design in the flesh (well, next to Shin). Never did much, but it looks damn cool.

2. Agito - Ground form. Very streamlined and classy with great colors. Burning form is a very close second, though.

3. Ryuki - standard form. Another great mix of colors, but it mostly comes down to the helmet. I love the silver helmet with the vents over the eyes.

4. Faiz - standard form. I still think Faiz has some of the best suit designs of the Heisei era. I like all three of his forms, but this one has the perfect mix of black, silver, and red accents.

5. Blade - King form. One of the best Rider suits ever, if not the very best. Beautiful design, great metallic gold, great sculpted details - this suit is perfection.

6. Hibiki - standard form. The iridescent purple is gorgeous and I love the atypical design. I like the look of his Armored Form, too, but I can't divorce it from my dislike for the part of the show it appeared in.

7. Kabuto - Rider form. I like this one for most of the same reasons I like Faiz: black, silver, and a splash of candy red. Another one of the all-time great helmets, too.

8. Den-O - Sword form. To be entirely honest, I'm not a huge fan of Den-O's suit designs. Rod and Axe are okay, but the others all have serious flaws. Sword Form is the only one I wholeheartedly like.

9. Kiva - Kiva form. Another good mix of great colors. I love the sculpting of the armor and the greave.

10. Decade - standard form. Another one of my favorite suits. Great helmet, awesome chest design, and the unique colors really make him stand out.

11. W - Joker. This is a hard one to call since his forms are all so similar. I think the all-black version is probably the most solid overall. Cyclone/Joker is a close second.

12. OOO - TaToBa. I love this suit in spite of - no, because of - the mismatched colors. Some of the monochromatic combos look more coherent, but I don't think any of them looks as good as the traffic light form.

13. Fourze - Base States. Like Den-O, Fourze is a show where I really don't care for most of the suit designs. Base State is just that one that has nothing I actively dislike on it.

14. Wizard - Flame. Wizard is a show where I like most of the suits evenly (except Land Dragon - that yellow coat just does not work). Flame pulls ahead just a little bit because, again, the combination of black, silver, and red just click for me.

15. Gaim - Kachidoki. I really love Gaim's main Orange Arms form and Kachidoki is a perfect upgrade to it - bigger, meaner, and more ornate. The only downside is that it's the form that spends the most time fiddling with the DJ Gun in close-up.

16. Drive - Type Speed. Drive is a Rider where I think each upgrade is progressively worse than the original (for the most part, at least; I do like Formula more than Technic). Type Speed is just a damn nice looking suit.

Kuuga: Amazing Mighty
Agito: Shining
Ryuki: Survive
Faiz: Default
Blade: Default
Hibiki: Armed
Kabuto: Default
Den-O: Ax
Kiva: Garulu
Decade: Complete
W: Luna/Joker
OOO: TaJaDor or Super TatoBa
Wizard: Flame Dragon
Foruze: Cosmic States
Gaim: Jinba Lemon
Drive: Dead-Heat

Kuuga: Rising Mighty Form
Agito: Ground Form
Ryuki: Default Form
Faiz: Default Form
Blade: King Form
Hibki: Default Form
Kabuto: Rider Form
Den-O: Sword Form
Kiva: Dogga Form
Decade: Kuuga Mighty Form :P
Double: Cyclone Joker Form
OOO: Putotyra Combo
Fourze: Base States
Wizard: Flame Style
Gaim: Orange Arms
Drive: Type Speed

I'm judging most of these purely of looks, so don't judge me :p
Kuuga: Ultimate (The black armour and gold lines work on every level)
Agito: Ground (All of Agito's kinda suck to me, but the gold makes this one suck the least.)
Ryuki: Survive (It takes Ryuki's base form and makes it more armoured and more shiny)
Faiz: Base (Like Agito, they all kinda suck, but I think his base form, with the lines and armour, looks cool enough. Apart from the head)
Blade: King (The card armour looks badass and fits the motif perfectly)
Hibiki: Base (The purple looks awesome and monster-y)
Kabuto: Base (Considering I can't even remember Hyper's look, it's got to be base)
Den-O: Liner (It fits perfectly as Ryoutarou's final upgrade, and the red armour looks like the perfect upgrade to Sword.)
Kiva: Emperor (The gold armour looks fittingly royal for this guy... even if he ignores Edna Mode's golden rule)
Decade: Base (Because Complete sucks)
Double: CycloneJoker (All the Double's look pretty similar, and this guy looks the most stylish)
OOO: PyToTyra (I am a sucker for purple, and the dinosaur motifs make this guy look badass.)
Fourze: Base States (Simple and effective)
Wizard: Infinity (The crystal armour looks awesome, especially on this form)
Gaim: Jinba Cherry (The red lines on the armour make this jinba stand out from the others, which all work due to the nice, simple armour)
Drive: Tridoron (The stylish, sleek upgrade to Type Speed that is awesome on many levels)

Kuuga: I'm kinda feeling Rising Mighty. Not sure at all though.
Agito: Ground
Ryuki: Default
Faiz: Default
Blade: I honestly like his Ace and King forms equally.
Hibiki: Default. Definitely.
Kabuto: Default
Den-O: Ax Form
Kiva: Default
Decade: Default
W: FangJoker
OOO: TaToBa
Fourze: Base States
Wizard: Infinity Style
Gaim: Orange Arms just slightly ahead of Kachidoki Arms.
Drive: Type Speed
(Ghost: Ore Soul so far)

Kuuga: Rising Titan- I just like how it has such a distinct armor design and it feels like this would have been Kuuga's rival if it was it's own rider.

Agito: Shining- I love how it looks like a natural evolution for Agito.

Ryuki: default

Faiz: Accel- I just like the panels on the chest opening up and the suit getting a slight color change.

Blade: King

Hibiki: Armed- I like how it looks like he's wearing sunglasses with the mask. plus, I love big ribber abs on my suits.

Kabuto: armored looks better.

Den-O: Ax-form. minimalist design, a big ax face, and IT MAKES ME CRY!

Kiva: Dogga. big Frankenstein hammer and it reminds me of titan form.

Decade: PIIIIIIIIIIIIIINK.

W: Joker. just Joker.

OOO: TAAAAAAJAAAAAADORUUUUUUUU!

Fourze: Magnet States- JUST PUT SOME BIG BEEFY RAIL GUNS ON HIM!

Wizard: haven't seen Wizard.

Gaim: Kachidoki. it am become death. destroyer of worlds.

Drive: Type Wild. the only form I care about in Drive.

Kuuga: None
Agito: Default
Ryuki: Default
Faiz: Default
Blade: King
Hibiki: Armed
Kabuto: Default
Den-O: Gun Form
Kiva: Default
Decade: Complete
W: FangJoker
OOO: None
Fourze: None
Wizard: All Dragon
Gaim: Jimba Lemon
Drive: Type Speed /w Max Flare

Kuuga: Rising Mighty
Agito: Burning
Ryuki: Default
Faiz: Default
Blade: King
Hibiki: Armed
Kabuto: Masked
Den-O: Climax
Kiva: Emperor
Decade: Default
W: FangJoker
OOO: TaJaDoru
Fourze: Base States
Wizard: Flame Stylee
Gaim: Kachidoki
Drive: Type Speed

Kuuga: Rising Titan
Agito: Trinity
Blade: King
Kabuto: Rider
Den-O: Axe
W: Heat/Trigger
OOO: SaGoZo...SAGOZO!
Gaim: Kachidoki

Rest are their base forms.