It's funny, 'cos a couple of years ago MGM and Animal Kingdom would have been the other way round, but I don't find that Animal Kingdom has the same tranquil feeling about it anymore.
I am going to WDW my first time this Thursday, so I will let you know. I did want to add that I grew up in Anaheim area going to Disneyland almost every weekend every summer, etc. I spent 20 years going to Disneyland too many times in a year, and I just have to say that it is sad for me to see how run down, and how it has lost its magic over the years.
I have to give four votes to Epcot as a family favorite. We spent 16 days at disney last christmas and spent most of our time at epcot. I just hope it gets some TLC soon.