Just thought I'd show the difference in the graphics between the AGA and SNES versions. I agree that with a CD32 pad, the gameplay is excellent, and I still play it a lot, but the graphics ARE shit. I don't know how they came up with the backgrounds, it's like they took photos of the SNES version running, scanned them, resized, reduced the colours and dithered them without repixelling anything. The sprites are also smaller (remember the SNES also stretches the picture to fit the screen, so they look larger than they do in this screenshot), and the colours on the characters are weird, Cammy looks like she's been in the oven for a few hours and gone brown. There's no parallax or background animations. Even the original A500 SFII looks better than this version, but played crap.
So the AGA SSFII is still the best Amiga version, plays great, sounds okayish, but looks poor. It's slightly better if you change the screen mode to NTSC though.
AGA Amiga and SNES versions of Super Street Fighter II: The New Challengers.