I have stayed in all of the sections and they all have their strong points.
I love Congress Park since it has great views (some of DTD but not all), a wonderful quiet pool and the walk to DTD is very quick and easy.
I also really love the Paddock, second closet to DTD, very quiet, but its quiet pool is being turned into a feature pool so I anticpate that area might not be the quiet, not so often requested area it once was!
I think Congress Park best fits your criteria, just bear in mind its often requested due to its proximity to DTD so you might think about a back up section as your second request. The Grandstand is a good one, we loved our golfcourse view that also looked out over the Treehouses and being first on the bus stop and also a two minute walk to the main area was really nice.
Its a lovely resort, I hope you enjoy it as much as we do!