the xiao long bao (esp. the crab meat ones) and the wontons in chili oil, peanut etc sauce are amazing!!! we go back for them all the time. pretty much every other dish we have tried here (meatball soup, pancake, fried rice) is decent, too. a solid place for shanghainese cuisine all around.
service can unfortunately be a bit hit and miss - some waiters are good but others can be very slow, and a few even seem like they are trying to ignore as many customers as they can. point of note: they also close very early on sunday (all chairs up on tables and lights off by 8pm - not necessarily a negative, but worth noting). prices are a bit on the higher side for chinese food.
none of that stops us from going back though. love the xlb. :)