Well since we are talking about video gaming systems I'd say that pc is clearly the best. The best controller,(for almost any game that is) the most games, the best games (since u can emulate almost every game there is to run on a pc) It's just well, almost perfect. And well that's almost everything u need. The price is the only downside.
If u ask on the console side, I'll have to say Super Nintendo. Got one when I was like 6. I liked it very very much, the games were awesome. And now I play it sometimes when I go to see my family (I gave it to my little brother) and it's still alot of fun.