Storyteller's prime rib is okay but sometimes they don't cook it long enough. I had the buffet there on Tues. night and my piece was undercooked. I went back and asked if they could please cook it a bit longer and they were happy to do it.
I'd go to Blue Bayou for prime rib (not a buffet though). That's my fav. dish there! It also comes with some scrumptious au grautin potatoes