I love this game, it's my favourite game ever. When I first bought it, I was disapointed. But when I got back into it, and saw the detail and creativity it contained, I regained my interest. It's not a 'perfect' game like OoT was: it has clear and many faults that frustrate me to the extreme, but it's goal is much greater than OoT's.
After completing it, I was left with the impression that much of the designer's thoughts and ideas had been poured into the game. Anyone remember the flower box in Yoshi's Island that said some thing like: "We, the designers have poured our hearts and souls into this game, We hope to like it"? That's the sort of thing I feel went into this game.
Bunny mask all the way. The dancing mask is a close second.