I normally use Ryu, Akuma, Ken, or Cammy (in that order), however I do play with Chun Li and Sagat too. Oh, and I'm definitely casual nowadays, but I'll play anyone. I haven't played recently, but I haven't been home either.
As Domo-kun said, nothing is really cheap, but some people haven't seen certain move combinations spammed to death. Once they figure out how to deal with it, it isn't that bad any more.
I'll have to add everyone to the list








