Cosmic Ray's in MK. I enjoyed my roast chicken and mashed potatoes, and the kids loved the singing robots. Don't remember what dh had, but he wanted to eat there again a second time, so he must have liked whatever it was.
Tusker House at AK was really good. We had salmon with rice and fresh green beans. Delicious.
I don't think we ate any CS at D/MGM.
Epcot has so many good ones, it's hard to choose. I think my favorite was the Boulangerie Patisserie in France. DH had a sandwich and I had quiche, and the pastries were yummy. We sat outside and people watched while eating and listening to the French music. Very relaxing and enjoyable. Oh, but the CS (can't remember the name offhand) in Mexico was great too! We shared a combo platter that was yummy, and paid oop for the fruity frozen drink things that were delicious. Sat under umbrellas on the patio by the lagoon, and a mariachi band was playing. That was very enjoyable too.