Tomorrowland.
The CoP is really the main reason, but I love WDW's Space Mountain. Also, the center of the land reminds me of how Tomorrowland in DL used to be. The Rocket Jets, on top of the Peoplemover, on top of the Lunching Pad. Sigh.
Didn't care for Buzz (hate the stationary guns), and I hated Stich! But yeah, CoP all the way, baby.