The SNES version is all pretty and has that satisfying deep-bass "thmmp" when you shoot a baddie, but I actually don't like the end-of-wave bosses. They get in the way. I guess I like the Atari and C64 versions better. I actually play the Atari 800 version over the C64 original because the colors look brighter somehow on my GP2X. They're near identical tho.