Eaten there : cantonese and very authentic : BIG WONG KING 67 Mott Street
Dim Sum , to try : Mandarin Court, 61 Mott Street
Classical Vietnamese : Thai Son 89 Baxter Street
Vietnamese deco rigolo :Bun 143 Grand street , http://www.bunsohonyc.com/
http://www.opentable.com/single.aspx?rid=27937&restref=27937