Oddly enough, I feel pretty meh toward their pizza, since I'm more of a thick crust person. They will definitely load you up on toppings, though. Lucky for Dave's, everything else they have is good! The Zilla was one of my favorite things as a kid; it's awesome, if you don't mind the calories. Plus, they have a good selection of things you can get elsewhere in Bartonville (Italian, burgers, wings, torpedos, fish), so it's like an all-in-one, which comes in handy if a group can't make up their mind. The fried chicken is spot on.
They've always been really cool about bringing in large groups, too. Plus, the service has always been friendly and efficient.
The one major downside: no credit cards.