MK - I like the theming at both Adventurland and Frontierland. But since Splash Mountain is my all-time favorite WDW ride, I'm going to go with Frontierland.
AK - I like the attractions in the other lands, but the layout for Africa seems the most well thought out. Plus it's got Kilmanjaro Safaris.
Epcot FW - I don't know if you'd consider Spaceship Earth a pavilion, but definitely my fav. If I have to pick a pavilion, it'd probably be Universe of Energy.
Epcot WS - Mexico Pavilion. Can't wait to see the new and improved ride.
Dis Studio - The lands are not so distinct here, but I'll go with Hollywood Street.
DTD - Marketplace.
Here you leave today and enter the world of yesterday, tomorrow, and fantasy.