I would say the GameCube. Since it not only has TP and the lovely WW but also OoT, OoT:MQ and Majora's Mask... Doesn't that in some way make it superior to the N64?
I voted SNES because A Link to the Past is the best Zelda game, and my favorite. But the Wii is the second best, IMO. It can play the Gamecube ones, and has all the old ones, aside from the handhelds, on it. I think the Wii is the best, but SNES has my favorite.
The Legend of Zelda
Adventure of Link
A Link to the Past
Ocarina of Time
Majora's Mask
Wind Waker
Four Swords Adventures
Twilight Princess
Skyward Sword
If backward compatibity and digital distribution are included, then the best console is Wii, because I can play all best Zelda games on it. Otherwise the choice is hard.