I personally find that if you don't mind the crowd, the wrinkled and often stained tableclothes and lack of smiling polite wait staff, then go to KC (Kay Cheung) restaurant in Chinatown on Jackson Street. The dim sum is so reasonable. It was $1.50 a plate the last time I went there and a friend said she was there recently and it was $1.75 a plate. So it's gone up a quarter... it's still good food. On weekends, follow the 'stinky' smell of the 'cho tofu' (stinky tofu) served 5 doors down (Kearny and Jackson) and you will find a bustling crowd waiting either on the street or in the doorway for a table.