Personal Preference. I'm not so big on the Meats all cut and on display, so I agree with Marco's list but would slide Caesar's out, and put Wynn in, but love M, and Cosmo very good. Bellagio maybe cause I remember it from before has slipped.
Mid tier pricing: Planet Hollywood. Rio. (locales huge discounts midweek still I think)
Value: Alliante, Main Streeat Station, Fiesta Henderson all great.
Best Buffet Seafood Dish. NOT CLOSE. GVR Friday Night. Steamed Crab then you can have em cook it order with Cilantro, Garlic, hot spice, butter. Could be the best Seafood dish in the world....but long lines to get in, long lines at the Crab Station, then lines at the Crab Grilling area.