One of the best spots for xiaolongbao! I visit Ding Tai Fung at least once a month, and each time I'm blown away by how flavourful and tasty the xiaolongbao are. I order them quite frequently when I go out for dim sum at various restaurants, but Ding Tai Fung definitely makes the best I've had. My other favourites are the beef noodle soup and beef pancake wraps.
It can be a bit pricey (I think it runs $6.99 for 6 original xiaolongbao), but I think it's worth it as a treat once in a while. Will definitely continue to visit, and am looking forward to more delicious food each time!