At the parks, I don't really have many recommendations. I like the Rainforest Café at Animal Kingdom. I don't do character meals or buffets, so that limits things a bit. A lot of the quick service options are the same everywhere so I don't feel the need to recommend one over any others. But yeah, I like the Rainforest Café's breakfast.
At resorts, Kouzzina, the Grand Floridian Café and Olivia's are all very good. The Kona Café is decent, though I don't love it like a lot of people do.