Too hard for me to choose!!!
We've stayed at Beach Club Resort, Coronado Springs (ok, that one was pretty mediocre for WDW), Wilderness Lodge Resort (GORGEOUS), All Star Music (pretty nice for $79/nt), BCV (LOVVVVE it!), and OKW (great value).
We're trying the BWV this time and I'm sure we'll love it too.
I guess I'm of the opinion that it's a rare person who DOESN'T like a WDW resort. They just go soooo far out of their way to make your stay "magical"!!
Each location has such a distinct feel to it, the experience is different at each one. I guess it's all in what you're looking for on that particular visit.