Sci Fi for lunch. We liked the food, but wouldn't eat there for dinner. It's just, for us, more "lunchy" type food. The atmosphere is pretty neat, too and the kids have a ball.
Prime Time for dinner. The food IS better than Sci Fi's, but we wouldn't eat here for lunch. They seem to excel at their dinners (not that their lunches are bad, per se), so that's when we would eat here. Their Fried Chicken is awesome, as is the pot roast. And the S'mores. Ye gods.....