SNES is definitely the best for me. I played Nintendo and the first Playstation the most, but I get the most fuzzy feelings from the SNES games that came out. I think they were the most fun, still kind of weird like early NES games but with a formula that gave you solid hours and hours of entertainment. I also fell in love with it all over again when I discovered ROMS and got to play all the games I had never played before, including some great Japanese ones that were really delightful.