Majora's Mask. The best Zelda I've played. Best dungeons (while too few of them), best story, best art, best music, incredible atmosphere, darker mood, awesome item system. You may be turned off by the time system, but once you get used to it, you can appreciate its uniqueness.
Twilight Princess after that. Slow as fuck beginning (for the first two hours, sorry) but after that it's downright perfect, tried and true Zelda. The best...conservative Zelda is a good way to put it.