We just tried Billy's Dumplings tonight and it was very good - and very, very similar to Mother's Dumplings on Spadina near College. Good news for us, as we live much closer to Billy's Dumplings than Mother's Dumplings. We had the boiled chicken and mushrooms dumplings and pan-fried pork, melon, and shrimp, which were great. The bbq pork buns were on the dry side though.
I'm hoping it gets more business as I'd like it to succeed - the service was friendly and I can now easily get my dumpling fix!