If you ever get bored of dim sum at Casa Imperial, Spring Villa is a good alternative to go to! They're also quite busy here, but if you know someone on staff, you'll be able to get a table faster. Still, I like the dim sum selection at Casa Imperial better, so if you're in the area, I would drive there instead.
But enough about that other restaurant. This place is great for lunch or dinner, with a solid selection of dumplings, fried rice/rice noodles/vermicelli etc, and lots of different dishes. Basically, you can't go wrong! :)