The N64 is my favourite ever console, so this is an easy decision for me. Mario 64, OoT, MM, Banjo, Goldeneye, Perfect Dark, Conkers Bad Fur Day, MK64, etc, etc... I could quite happily play them all today, and I'd enjoy them just as much as I did back then.
I'm enjoying my PS3 now. Will the games stand the test of time? We don't know yet.
VGChartz