The Rendezvous is mostly trading on its reputation.

I'd have to go with Neely's on Mt Moriah. Heck, they have their own show on the Food Network. You just might want to be careful after dark in that part of town.

Central, Leonards and the G'town Commissary are also good. Of course there is also the barbecue championship in mid-May, if you can stand the crowds.