Yeah, Street Fighter 2 Turbo Hyper Fighting was the best port for the SNES. Super Street Fighter 2 was ok, but they fucked up the sound effects and the announcer sounded like a ***.
I suggest picking up a copy of Street Fighter Collection 2 for the Playstation. IF you can find it of course. This is THE DEFINITVE collection to have if you like Street Fighter. Perfect ports of Street Fighter 2 World Warrior, Street Fighter 2' Champion Edition, and Street Fighter 2' Turbo Hyper Fighting! It has a concept art gallery for all the fighters, training mode, remixed soundtrack and sound effects option, and a special Versus mode that lets you play different versions of the fighters....like Champion Edition Ryu vs World Warrior Guile. All frames are perfect, and not a bit of animation is missing. Its the next best thing to having a cabinet in your house!