We love Tusker House in AK - DH got 1/2 Rotisserie chicken, mashed potatoes and green beans and I got Salmon, Rice and green beans as entrees, plus 2 drinks and huge slabs of chocolate and carrot cakes for dessert. We saved the desserts for later - we were so stuffed! We couldn't believe we got all that for a CS.
Wolfgang Puck Express is a great choice for a dinner CS - I got the chicken Ceasar Salad (HUGE), DH got a pizza. For dessert, we got a cookie and a brownie for later.
Epcot - I'm partial to the fish & chips, but that's more of an addiction than anything else

We enjoyed the Electric Umbrella in FutureWorld as a family
MGM - haven't really eaten much here, come to think of it. We'll probably do Pizza Planet next trip.
MK - We enjoy Pecos Bills, but they only offer a peanut butter brownie thingy for dessert, which none of us care for, so we'll try somewhere else next trip.
We only used 1 CS for breakfast, and frankly don't think they are worth it. We would often get fruit salad as a dessert option with a CS and save it for the next day's breakfast. We also used snack credits for breakfasty items. We tended to eat lunch early (tip from DIS to avoid crowds), so this was fine for us.
Don't know where you are staying, but we found the food court at POFQ was great - we were staying at POR and took the boat to FQ for supper - very yummy with a Creole flair.