Never been the biggest fan of Alpha 3, the game felt way too floaty for my liking, the presentation and music is a massive step back from the previous game and overall it just makes me wish I was playing Alpha 2.
This PSP port is easily the best version with the most amount of characters, some fixes to weird move properties and now you can actually continue against Bison, which was one of the things that put me off of the original.
I would still rather play Alpha 2 but this is solid.