We love the dinner buffet at Storyteller's! It was one of those meals we put off trying for years and when we finally did it we couldn't believe we waited so long!! We now try to do it every trip. We've also done the California beach cook out style buffet at PPH. It's very good as well. But, you can't beat the atmosphere of Storyteller's. It's absolutely beautiful. Great food and amazing ambiance.
Oh! Forgot to mention! We have also done the Goofy's Kitchen buffet dinner. It was pretty good? Not super memorable. But, if you can't do breakfast at GK you may want to do it for dinner. We love the characters and the place is pretty fun.
So I would say 1. Storyteller's, 2. PCH Grill, 3. Goofy's. But honestly they are ALL good! You really can't go wrong with any of them!! Enjoy it!