SNES was great and I loved it back in the day, but it's processor was sure slow as shit. I still have yet to figure out how Beam Software made Smash TV on SNES with no slowdown.
As much as I loved all the 16 bit systems I'd probably go with the Sega Saturn. Princess Crown, Gekirindan, Batsugun, Panzer Dragoon games, Astal, all the cps2 fighters, Elevator Action Returns, Soukyugurentai, Gunbird, Sengoku Ace, Psychic Killer Taromaru, Darius Gaiden, Sakura Wars, Grandia, tons of others.