Definitely Keens! We were just there last night. As always, the food was perfectlyy prepared and delicious. Unlike some steakhouses where surly service is "de rigeur," the waitstaff at Keens is pleasant, as well as efficient. The noise level is conversation-friendly and, of course, there's the unmatchable Old NY ambiance, i.e., walls filled with authentic American memorabilia and rows of old clay smoking pipes suspended from all the ceilings. Definitely a great place to celebrate a birthday.