There are buffets all over Las Vegas especially in the casinos/hotels. With buffets, you should explore around to find ones that appeals to you the most. A place I recommend eating at is The Buffet at the Wynn, which is one of my favorite high-end buffets on the Strip:
The meal times and prices:
The whimsical-like decor:
This was one of the plates I stuffed myself with. There are 15 (or 16?) stations there, which include salad, Asian, dessert, seafood, meat carving, Mexican, and Italian. So there's something for everyone: