At least half of them have been my fav at some point over the years:
Germany, because the indoor area is nice.
Mexico, because it was/is the only actual ride in WS. And so atmospheric indoors!
Japan. Best restaurant, best exhibitions, best entertainment, best shop. Except for the still not finished ride a perfect pavilion.
Canada. Great movie, lovely garden and rocky canyon. The closure of the upstairs bit and the now celeb infested movie have lessened it.
France. Poetic movie, plus I get to eat my baguette with cheeses
Italy. So very pretty. ^_^
America. The spiritual heart of WS
Wow, seven of them. Which leaves really only the UK - pretty, but surely they can try a bit harder?, Morocco - which like the real thing I dislike, and China, which is actually terrific, except for the restaurant feeling like a thousand others. And Norwendelle, I shall refrain from comment here.