@leirbag: I know what you mean, most Amiga games have been developed for Amiga 500's with only 512KB Chip Mem, which most of the time doesn't allow for high quality sound. Second of all, the SNES has 8 stereo sound channel while the Amiga has only 2 (stereo that is). But I have to admit, I never really played on a SNES, just looking at the facts :-)
But the Amiga HAS higher quality sound than the Megadrive (save for the lack of some of them due to the low amount of audio channels, and the bad pre-'89 ports)
By the way, I DO like the better-than-soundblaster-FM-sound of the Megadrive :-D