While I find Decade's Complete form to be the least visually pleasing (although it's close), Gaim's Kiwami arms is the most disappointing from a thematic perspective. Its biggest sin is not being a fruit. Sure, it's got the lame fruit sticker on the chest, but man. They had one job! Not having a fruit plop onto his shoulders killed it for me. Also: needlessly pointy hat.

However, my biggest incompatibility with Rider fandom is that I'm not a fan of form-switching. Some shows used it well (W, Gaim), but in other places, it just strikes me as unneccessary/lame (Fourze, Drive.) I think my main objection, however, is that Riders' main forms almost always look better. Toei puts a great deal of time and effort into the base designs, and later forms never look to me like they've been given as much love.

I think I'm on-board with SengalBoy's point about the gold and silver color schemes coming across as bland.

Kiva Emperor Form isn't in the list.

I am pleased, as that suit is perfection.

Ryuki Defense to the.... you Know I will admit it Ryuki Survive is not great, is a real let down in terms of upgrades of the rider before ryuki and Ryuki's main power is really his contract monster.

Gaim's final form I do not like as much do to not really connecting with the mechanics of the previous forms, aka the folding fruits, connecting with the final form and Complete decade looks bad.

Decade Complete. It looks bad, doesn't really add anything to Decade's fighting beyond "Summon this dude for a finisher", and it looks bad.

Hopefully Grateful will make good use of it's summoning powers. I know it isn't a final form but the two function similarly.

But yeah I chose Decade complete. If I had a second choice, and if it was on the list, probably Ryuki Survive, that chest area just kills it for me. They got it right with Knight Survive, so why couldn't they get it right with Ryuki?

Gaim Kiwami Arms... while it is slightly bland due to the silver it at least shows progression in terms of design. Admittedly Kachidoki kind of prepared us for this in a subtle way since Kachidoki isn't technically a fruit. Also while Kachidoki looks cool, subsequent fight scenes made me not like it due to all the large armor flopping about whenever Gaim moved around in it.

Gaim's Kiwami form make no sense with it's color scheme and the giant pointed head.

At this point, I have to go with Cosmic Fourze, which was a huge mess. If Ghost's Grateful form is anything to go by, though, then my answer is probably going to change whenever we see what that show has to offer.

It's based off a suit of armor that was allegedly worn by Oda Nobunaga:

http://3.bp.blogspot.com/-E0s1tNeWHE...00/armor04.jpg

The first ones that come to mind are Fourze Cosmic and Faiz Blaster - the two boring redecoes (and minor retools) of the main form that pick colors that clash with the design in an effort to be different from the main form.
Faiz Blaster is a worse offender in that regard - it offers nothing truly new and different to look at compared to the main form, except for being red.
So my vote goes to him.

But beyond the "repaint/retool" criticism, I'm not a fan of Decade Complete either. Too much pink on silver, his eyes probably being the last straw.

I gotta say, though - I have no problems with Kiwami. I think the silver looks nice and the chest gets a pass from me since it's supposed to be a cuirass and not just any old chestplate.

Huh. Man, I didn't know so many people didn't like Ryuki Survive. I wasn't the biggest fan at first, but it's grown on me a lot recently. I think Knight Survive is positively hideous though.

Opinions are a funny thing.

Gaim Kiwami Arms it just looks weird with that fruit basket in the middle of the chest.

Kuuga his final form it just looks boring.

Den-o liner it looks like they took a bunch of parts from other riders and glue them together. Also I never like how Den-o eyes look because to me it felt like the eyes where going to fall off his helmet lol.