As you can tell from my previous post, I am a huge Blue Smoke fan. However, I believe I found a place that tops Blue Smoke (Please don't hurt me).
It's Hill Country, it's on 26th between Broadway and 6th (http://www.hillcountryny.com/) and the food is very authentic. Sold by the pound, gets very pricey, but worth every penny in my opinion.
The brisket is really unbelievable, the ribs simply fantastic, and the ambiance is really fun.
It's semi self serve, so it's not as "upscale" as Blue Smoke, which I still like a lot.