My husband and I will be celebrating his 30th birthday with a long weekend in New York next month, and I'm looking for suggestions for his birthday dinner. Looking, above all, for great food of almost any ethnic persuasion; what we don't want, however, is an incredibly formal atmosphere -- it should be special, with attentive service, but comfortable. (For those of you familiar with the Washington, DC, restaurant scene, a place like Obelisk on P St. would be perfect; Citronelle would be too formal.) We'd prefer to stay below midtown (but we're flexible on this), and price is not a major concern. My research here and in the NYT gives me this list so far: Tabla, Town, Babbo, Annisa, Oceana, Fiamma Osteria. Any preferences among that list, or other suggestions (particularly for "hidden gems") are welcome; we'll be celebrating on a Thursday night, if that makes any difference in terms of reservation availability or atmosphere. We visit New York at least once a year and have enjoyed 'ino, Bar Pitti, and Gramercy Tavern on past trips; we've also eaten at Blue Ribbon -- we enjoyed the food, but found the place a bit too "scene-y" -- hopefully, that gives you some sense of our restaurant tastes. Thanks very much!