Which Kamen Rider/Super Sentai shows...

[Solo the Wingman]

Pretty much what everyone else said: different strokes for different folks.

Case in point: there's already been a recommendation against Decade. I wouldn't go quite so far as to disavow Decade; I really enjoyed most of the show and the concept was unique. I can see why people don't like Decade since my personal head-canon is that the ending doesn't exist, but it's not complete and utter trash.

Don't let mass opinion decided anything for you. Just pick a show and try it out.

 

[Scissors]

I absolutely love Battle Fever J, despite the fact that most people won't even go near it.

Its all a matter of personal taste, and I think that every show out there has at least one big fan here on HJU.

 

[Kamen Rider IXA]

I want to say:
GoogleV - but It has one really awesome cutie - GooglePink.
Zyuranger - but Bandora is real good villain

Lots of shows has Its own advantages and disadvantages, so I guess you should watch everything))