Paul:
Celebration is by no means a must-see. I like Disney's Osprey Ridge (Fazio) and Palm (Joe Lee). Eagle Pines (Dye) is okay and Magnolia (Joe Lee, the tournament course) is a major letdown. Lake Buena Vista (Joe Lee, LPGA venue) is the least of the bunch.
If you want my recommendation, go to Mystic Dunes, Southern Dunes, and Highlands Reserve. The Legends at Orange Lake is pretty good, but the timeshare is overcrowding it and diminishing the site. Ridgewood Lakes is to be avoided. If you can get on, Reunion is pretty cool.