Ahhh WIND WAKER (ALttP or TMC second) DEFINITELY WW.
The Wind Waker is absolutely by far my favorite legend of zelda game. I am in love with it. From the second i turn it on, there is almost never a moment where I don't enjoy myself.
I loved the cel-shaded graphics, they give the game an absolutely timeless feeling. The soundtrack to m is the most masterfully assembled soundtrack ever in Zelda history. It looks childish sure, but the emotion and story in the game is surprisingly mature, and absolutely stunning. Everything about this game just screams adventure. The Great Sea is pure exploration. Whenever you're sailing the great blue sea and you see a tiny speck in the distance - a new island - you can't help being curious.
As for the gameplay, it's amazing. everything feels so fluid and smooth, especially the combat. The dungeons are very well put together, as well as the boss battles. The problem that a lot of people have with the game is the sailing. Sailing is one of the slowest methods of transportation (besides walking), and it's on a very larg sea. You also have to control th wind everytime you want to go somewhere. However you can easily get used to it and grow accustomed to the sailing. I enjoy the sailing because of the great music that accompanies it, the gorgeous view, and the control you have of where you want to go.
I say the WW 100%