I'm actually gonna go spend some money buying copiers but before I do, I would like to know what would be considered the best ones to buy. Tell me of the best copiers for any system pre-Playstation or if there was any after, tell me about those to.

Fro SNES, the Super Wild Card DX2 unit. Get one of those that support as many special chips as possible + high megabit counts.

That's what I was leaning towards for the SNES but i've also been seeing this Doctor SF7. Any copiers for NES, Genesis, Turbo Grafx 16 and such? And if possible, links would be nice.