The games on the Genesis were better than the ones on SNES IMO. I had both growing up, except I had the Sega Genesis 2.
SNES How is this even a competition? SNES had and currently has the largest game selection of every console ever made. I *still* play my SNES, even more than my 360 or PS2. The whole game selection is a legacy. Many of the games currently in development and being released on current gen consoles wouldn't even be around if it weren't for their SNES/NES prequels or games of similar genre.
Definitely the SNES. Still got mine, with street fighter, super metroid and the numerous donkey kong games lol.
Maybe in the future we'll be hearing the same about the XBOX 360. It seems to be the one with the "largest selection." We'll have to wait for the future though... I don't know what system I"ll look back most fondly of in 10-15 years time.