I suppose if you were to compare this place to other buffets--like, say, The Golden Corral--then you'd say the food was better. Then again, the Golden Corral doesn't cost $40 either. And that was the price for dinner at Aria on a Sunday night. With that, you get the buffet, half of a small lobster and apparently limitless red or white wine (though certainly nobody seemed in a hurry to offer refills).
The buffet did have an interesting assortment of items. I saw one man attacking the crab legs and shrimp as if he had not eaten in months and we felt someone would come along at any moment and drag his food away.
The bread pudding and bananas foster both seemed pretty outstanding among the desserts. As for the food, it seemed fresh enough. There were several options for ceviche. Some Chinese food. Nachos. Pizza. A carving station with beef, ham, turkey, and salmon. And an actual salad bar.
There was absolutely no item in the place that made me think "I will have to come back for this." Yes, you can eat a lot and get stuffed--but is being stuffed really the goal of eating? There are so many other places from which to choose in the area that I'd much rather spend $40 a person and come away feeling pleasantly full and having a memorable meal elsewhere.
Again, as far as buffets go, it may be great. I have no idea. I'm not a connoisseur of the buffet. As far as restaurants where you'll spend a couple of hundred dollars for a small party to eat, there are many, many better options.