For a real Dim Sum experience this is the place to go! Not only is the food tasty, but it is affordable too! Would definitely recommend going in a large group, as you'll be able to try a lot more dishes... as well the restaurant can accommodate without a reservation...
Next time you have friends visiting from out of town, I would suggest bringing them here. I find if they're unfamiliar with the Chinatown experience this is always fun to do.