I'll do it by season.

Ones I love:

Borneo
Outback
Africa
Marquesas(my second favorite, Nuku Hiva is so gorgeous)
Thailand(my favorite)
China

Ones I didn't like:

Pearl Islands(I don't see the appeal behind burning things. If it is an homage to a viking funeral, then it is somewhat insulting.)
Panama(boring)
Cook Islands(boring cubed)