One of the best bangs for your buck although a little above the price range is Liberty Tree Inn in MK. I believe it was $38.00 per person. (Includes a drink, all you can eat entree and dessert.) Garden Grill is basically the same food experience in EPCOT with the rotating restaurant that moves through The Land ride.
We actually enjoyed the taco trio at Pecos Bill. It was very good and filling for a counter service.
Brown Derby Lounge, (outside) it has many of the same entrees as Brown Derby inside, including that great Cobb salad.
Tangerine Cafe in Morocco is very good bang for your buck, if you like Mediterranean food.
Good reasonable food at DS.
Polite Pig
D-Lux Burger
Raglan Road
Wolfgang Puck Express
We found the pot roast at Docking Bay 7 at Galaxy Edge to be good. HS is tough, other than Brown Derby Lounge, there isn't much bang for your buck around there.
Via Napoli in Epcot has good pizza and a 20" Margherita is $28.00. (Feeds 2 to 3)
Satuli is excellent across the board.
Flame Tree is a good bang for your buck, (lots of food) although we are not big BBQ people ourselves.
Yak and Yeti Local Foods and Harambe Market have good food as well in AK.