I'm Cantonese-American and still visit family regularly in Hong Kong. I like Cai, Phoenix, and Ming Hin reasonably well for dim sum in Chinatown. I was in the neighborhood and already parked right in front of D Cuisine for another errand, so figured I would swing in to try my barometer for good dim sum, the har gow (shrimp dumplings). The restaurant owners/workers at D Cuisine also speak Cantonese and at noon on a Saturday, the restaurant was moderately busy but they were able to provide attentive service.
The har gow were freshly steamed when served. Unfortunately, I found the skins (wrappers) pretty thick (thicker than any of the Chinatown dim sum options). The shrimp filling was fresh and springy (firm? as it should be) but slightly underseasoned. They automatically serve a sriracha-like chili paste and hoisin dipping sauces, but I shouldn't need to rely on these for proper seasoning.
The har gow are considered a "large" dim sum, priced at $4.95 - that's a bit more expensive than the roughly $4.00 "large" dim sum at many places in Chinatown, but I'm ok with the Lincoln Park markup. However, you do get a fresh almond cookie (and a fortune cookie) complimentary with your check.
I did not have the opportunity to try any of the other dishes - had to get to another appointment, but the convenience of a Lincoln Park dim-sum option unfortunately doesn't balance the scales on thick dumpling skins and underseasoned shrimp. I like their efforts to serve proper Cantonese food in Lincoln Park (without having to Americanize their food too much), and I will try to get back to give their Cantonese dinner menu a try.