Well, we like BWI at Christmas, because it is close to Epcot where we spend alot of time and the deluxe room has plenty of space for our tree. I also take my son for a birthday trip and because he has gotten real friendly with the CM's there he loves the BWI.
We like the Polynesian for our 4th of July trip because we can get a view of the fireworks from our room in the Hawaii building.
The past 2 years we have gone to the AKL for my 40th birthday and our 20th anniversary, Sunrise Safari, and the Sunset Safari can't be beat for a special occasion.
For spring break we have been going to DL and staying at the Grand Californian, it's only about 25min from Huntington Beach. They also have the most awesome Easter brunch with the characters.