A great dim sum place near the strip at the Rio. You can get here from the strip from the free shuttle bus from Bally's or simply take a cab. Brightly lit, clean interior with great service too. In my opinion the dim sum here rivals those of Seattle and San Francisco Chinatowns. Even the tea (goke fah or chrysanthemum) was fragrant and high quality. Our total bill before tip came to about 70 for seven people, and we ordered lots.
Some standout items included curry fish balls, sticky chicken rice, beef balls, Siu Mai, black bean spareribs, and fried bean curd filled with shrimp. All of these items had just enough salt and weren't too oil - in fact all still had good texture.
A minor miss is the beef chow fun. Beef was seasoned well and there was plenty of "wok breath", but the chefs here sliced up the rice noodles. Most of our group were used to llonger wide noodles, and I tend to agree - it would make the dish better. Imagine eating pasta with spaghetti sliced up and you'll notice the difference!
Still, extremely good quality to price ratio and authentic dim sum. Service was great and the food does come out fast!