I mostly use Legacy Station in the Atlanta area (it's essentially overnight shipping for me, though I'm not a speed freak about such things - but, the fewer miles, the less handling). Brian is good to deal with. I've also had a couple of eBay transactions with them.
I also like Charles Ro (contradicting myself on the "fewer miles" thing).
These 2 are my usuals, but I don't buy much new any more.