Boma, Le Cellier
(going for my birthday ), Sanaa, Teppan Edo, and Trail's End are probably my top five. It's tough! The Wave is my favorite for breakfast.
Sanaa lunch and Trail's End dinner are definitely hidden gems.
At Disneyland, Steakhouse 55 was auh-mazin'. I actually found the typical counter service food better at DLR than WDW, but my family went to Goofy's Kitchen for dinner and Storytellers Cafe for breakfast
(I had a stomach bug) and they weren't impressed.
At MK, the only good counter service is Casey's and Be Our Guest. DHS doesn't really have anything good.