Hope this helps.
Magic Kingdom
Counter serve-All have there days, over all and depending how hungry you are most are good. Some favorites-Hot Dogs at Casey's. Columbia Harbour House good place to cool off and grab a bit on a hot day.
Sit Down-We like Crystal Place for all meals. Also The Plaza Restaurant.
Epcot
Counter Serve-Most are good although there are a few that we don't care for. Cantina de San Angel and Lotus Blossom Cafe are Yucky.
Sit Down-All have there days, one we continually return to Rose & Crown. I've found over the years it depends on what Grandchildren we have with us. Some like San Angel Inn, others like Coral Reef, still others like Rose and Crown. I myself love the ones in France both Bistro and Les Chefs de France.
Animal Kingdom
Counter Serve-All are good, favorites Chakrandi Chicken Shop, Pizzafari, Tusker House.
MGM
Counter Serve-Most yucky. One I do like Starring Rolls Bakery.
Sit Down-Very Difficult here most are not that great. Sci-Fi OK for a burger, fries and milkshake. 50's Prime Time, food OK but lots of fun. Mama Melrose Italian with a california twist. Some like it other don't.