Dimsum at the Perfect Restaurant has always been very good and cheap, which is probably why there's always a long line up whenever i went there during the weekends.
It's a large restaurant that opens 24 hours a day. During the day, servers would push dimsum carts around the restaurant. For some reasons, diners would go up to the carts to get the dimsum dishes before the carts get to their tables. I guess this is because everyone is afraid the dishes would ran out. In some cases that's what would happen. But even when that happens, you can order specifically from a waiter and have the dish delivered to your table. I really do like having the carts being pushed around with the servers calling out the names of the dimsum dishes being offered. It keeps up with the dimsum tradition that is slowly disappearing in other restaurants.
Seriously, try not to be put off with the crazy line to be seated. It is well worth it, and patience is rewarding.