I vote New York (though that may get up there in $$$ really fast) or Georgia.
I KNOW Tucker wouldn't fly well.
I really like Whit's idea of having one on the East coast and one on the West coast (on different weekends) so that those who can afford to go to both can, and those who maybe can't afford to fly (or can't for some other reason) don't have to miss out. I also agree with having more time to just sit and talk. The main reason I would want to go would be to hang out with everyone in person.