How old are your kids?
We like the Poly with little ones because its served family style. My kids were 2 and 3 for our last trip, and family style means mom and dad spend less time getting plates for everyone and more time eating and enjoying ourselves. Its Mickey, Goofy, Pluto and Chip and Dale.
Garden Grill at Epcot is also served family style and serves lunch and dinner (with Mickey and crew).
If your kids are big enough to get their own plates (or if you don't mind shlepping plates back and forth), there are plenty of other options. I've never been to a bad one.