Well AKL is by far the best resort on property in overall quality. Nothing else is really close if you're just looking at the hotel in a vacuum -- i.e. the restaurants, theming, etc. and ignoring any other factors like price and distance to the parks. Grand Floridian was second, but it's taken a huge hit with the loss of the orchestra, the terrible Enchanted Rose lounge, and other things.
Once you factor all of that in, I think Port Orleans is the best value because of the huge price difference between it and the deluxes while still getting beautiful grounds and easy access to most of the parks and Disney Springs. I prefer Riverside, but French Quarter is good too and they're essentially one resort.