I'm trying to find a high quality restaurant in the Union Square area (walking distance) for a birthday dinner I'm organizing (15-20 people). I'd prefer "New American" style food but not necessarily dead set on it. And if it's a place that specializes in small plates/appetizers that'd be even better. Cortez has been recommended to me, and it's right in line with what I'm looking for food-wise but seems a bit pricey. Trying to stay under $50 per person (without drinks) if possible. Oola is another one that looks like it has a great vibe, but is too far. Anyone have recommendations?