I'm tempted to get this but I don't think I'd be able to play online because I don't pay for PS+. Also, the PS controller kind of sucks but I'm not buying another.
I've played a shit ton of SF over the years, to the point where I kind of consider it a real waste of a good portion of my life.
I'd like having a good arcade perfect copy of Hyper Fighting and I've never spent much time with Three or Double Impact but I've played the heck out of all the others.
Is Super Turbo HD Remix on there? I enjoyed that one a lot on PS3 - the little tweaks made a big difference.
I'm in the minority that prefers the first 2 Alphas to the 3rd - although I never played them a high level and from what I understand the counters were too turtle friendly and the custom combo was kinda broken.
I guess I'd be most into playing Hyper Fighting, (Vanilla) Super, Alpha 2, and 3rd Strike (which I still play on Dreamcast occasionally).