I tried playing Street Fighter 3: Third Strike, particularly the characters who weren't in Street Fighter 2. I tried playing as Oro, Urien, and Q, though it seems like it will take a while to get used to the newcomers in SF3.
I have trouble with using charge characters and grapplers, and it seems like a lot of the characters outside of Ryu, Ken, Akuma, and Chun-Li fall into one of those categories. The main exception seems to be Sean, and by my limited understanding, I'm pretty sure he's a joke character in Third Strike. (Not sure how Ibuki plays)
Then again, I'm still experimenting with the roster, so maybe I'll find one that fits me. I'd just rather not fall back on Ryu, Ken, Akuma, or Chun-Li when they added so many new characters.