I really don't think you can go wrong either way. We loved AKL but did not like the travel to/from the parks...it's a bit more out of the way. And we also spend the least amount of time at AK park. It is a very cool place, though, and seeing the animals from your room is pretty awesome! Never stayed at BC but we did stay at BWV recently and LOVED the location! I agree not to discount Epcot, we all love it (my kids are 5 1/2 and 16 months) and have loved it from their first trip in '07. There are quite a few family and kid friendly rides and attractions in Epcot including some of my daughter's all-time faves. From BC, you can also walk over to the Boardwalk area and there is fun entertainment and performers every night. The BC pool is also really neat, but I imagine that the splash park at AK is great for the kids, too.