If you child were older, I would recommend the BC for quick Epcot access and the amazing pool. But, for a toddler, I would go with the WL---the grounds are beautiful, the Whispering Canyon Cafe is a lot of fun, and the boat ride to MK is great. Otherwise, I would choose the AKL with a savannah view. It's a totally unique resort and the animals are fascinating. Both AKL and WL have a very relaxing atmosphere. GF is my all-time favorite, but I would recommend a stay in WL or AKL just because the experience will be so different. The Poly is OK, but I don't think it compares to the GF. You may find that opinion is in the minority, though.