Orga gives people orgasms

Tough choice, but I have to (perhaps controversially) suggest that my favourite rider design is Black Rx.

The design and colour choices appealed enormously to me as a child; and continue to today. The outline around the eyes, the 'collar', the beautifully simple double king stone; it all comes together wonderfully.

Apollo Geist is still my favourite KR character design by a country mile though...

Accel basic and Gaim's kadidoki form are my top two right now.

Made this a little while ago. Please note, my personal favorites don't represent the actual quality of the suit designs... *looks at Miss America*
http://i1362.photobucket.com/albums/...ps5505ba09.png

http://img1.wikia.nocookie.net/__cb2...menRiderG4.jpg
http://img4.wikia.nocookie.net/__cb2...70px-Ryuga.jpg
http://img3.wikia.nocookie.net/__cb2.../f/f3/Ouga.jpg
http://img2.wikia.nocookie.net/__cb2...aive_ready.jpg
http://img1.wikia.nocookie.net/__cb2...der_Kabuki.jpg
http://img1.wikia.nocookie.net/__cb2...per_Zecter.jpg
http://img4.wikia.nocookie.net/__cb2..._Rider_Arc.jpg
http://upload.wikimedia.org/wikipedi...ider_Skull.jpg

Top 5:

Den-o ( all forms )

Zeronos

Kiva

OOO

Faiz

As far as single cohesive looks go, my top 5 are:

5: Den-O Sword Form

4: Wizard Flame Style

3: Gaim Orange Arms

2: Kabuto

1: Knight

As far as DESIGN on a conceptual level, OOO is and may always be my favorite. I love the versatility and the idea behind the interchangeable segments. All of the combos look amazing as far as I'm concerned.

Gotta mention Kachidoki and Infinity. Infinity wasn't really implemented well...at all, but it did look really great, especially in context and looked wonderful in motion with all those sparkles.

Kachidoki is a gorgeous suit on paper, but absolutely awful outside of it in my opinion. But as we're talking about design, and not implementation or how it looks in motion, Kachidoki is up there with the best of them. Despite being right there at the bottom in all other regards.

W (Cyclone Joker), Agito (Burning),Blue Nazca Dopant,Kamen Rider Gills, Kamen Rider Birth, Kamen Rider Accel cuz how dumb it looked but I love it regardless, and Weather Dopant design was right up there with Nazca for me

skull, eternal, gaoh, ixa and burakawani are probably my favorites.