Went to Pearl King to finally use the Groupon we got months ago - we aren't on restaurant row very often. We went in on a Friday night at around 7pm? It was pretty empty, but got to maybe 1/3 full as we were leaving (King West usually doesn't get busy until later so it's no surprise). The restaurant itself seemed clean and open - a little too bright though for my liking. The staff were very friendly and courteous to us. Food came out at a good pace (I would hope so since it wasn't busy). Great bottled beer selection! I don't recall them having draft though.
Reading other reviews, of course it's going to be more expensive than China town dim sum - that rent can't be cheap! But I think the quality was definitely worth it (especially getting $15 off with the groupon). The spring rolls and shrimp rolls were amazing! If you aren't sure what to order, ask your server - ours was super helpful in telling us what was most popular and they were great suggestions! The chow mein was SO good - and a great portion size to share with a few other dishes. I was a bit underwhelmed by the steamed buns - a little too doughy for me.
All in all, a positive groupon experience for us!