I thought the SNES version would win hands down, as that's the clear choice, nice to see though that people are just not that predictable
I worked in Tandy years ago, and Mario Kart came in (just one copy, no wonder they went bust) and I was in love, boy me and that game had some good times.
Few years later the N64 came out, I could purchase it (said the wife) but only with one game, and that would have to do me till Christmas (still 4 months away).... Oooo do I get Mario64 or Mario Kart, it was tuff, but I went for Mario Kart (Mario64 was first on the Xmas list). So that's the only game I had for months, and it was good, real good, in fact better than the first one.
I still play it now on the N64, and even my daughters rather keen on it, just adding to its clear vote and my Number 1 Mario Kart game.
Stinkers I dont think there is any, but Double Dash never really dont it for me, and the new Wii one, well that bloody controller cheeses me off no end, using the classic controller saves it.
So for me Double Dash is the worse version...