Emory places well in consulting. Atlanta is a huge market and Emory is a top pick for recruiting.
I honestly found the UNC facilities lacking. College town location didn't appeal to me. However, they do place some people in MBB. I imagine it is still tough to do that though.
Georgetown is ranked lower than the others, so I would scratch that option.
I would accept the Emory offer and put a deposit down. Go to their Admitted Students Weekend. Speak to alumni and current students and maybe that will convince you wholeheartedly.
Also, do you have a gameplan to get off the waitlist? I imagine there's not much you can do apart from retake the GMAT. How many times have you taken it? How likely do you think it is to get a higher score? Plus, there's no guarantee that you'll get off the waitlist even after getting a higher score. Too many what-ifs to wait on UNC. Not worth the risk.