Now, I could say go and stay at the Wilderness Lodge, as that is my favorite. But, that would really not serve you as it may not be yours. I would recommend
www.allearsnet.com like
swilphil mentioned in her post. I though would also if you have not done it already, is to order the Disney Planning DVD, it provides a great deal on the resorts.
I have stayed at Disney during the Christmas Season, we stayed one time the Wilderness Lodge and another time we stayed at the Animal Kingdom Lodge, and they were amazing. I also checked out the Grand Floridian, the Poly, and the BoardWalk, all three were amazing. Now, back to the altimate question you need to ask yourself and that is what theme catches your interest. Themeing is everything when staying at the Deluxe Hotels, I think once you figured out which theme you like the best, then that will be the one for you.
Good Lucking in your Hotel hunt.

Happy Anniversary
Tron72