I'm going to vote the Wii for the following reasons:
I never got to play Zelda as a kid and have only started gaming over the past 5 years or so. The Wii has allowed me to play SO many Zelda games, old and new, from the original Legend of Zelda to Skyward Sword (if I count correctly, there are 11 zelda games you could possibly play on the wii?).
However if we're talking the best original games... I'd have to give a tie between the N64 and Gamecube (because I loooove windwaker!!)