In a word, Charlotte (in theory, at least). As a former Charlotte resident (and current Nashville resident), I know the school has almost zero pull in and around the city (who knows what kind of following football will develop, but I wouldn't hold my breath). But at least it is in the magor market city and the biggest school in the city. MTSU is half an hour outside Nashville and third tier behind Tennessee and Vanderbilt. Over time, UNCC has a better chance of attracting local TV viewers in Charlotte than MTSU does in Nashville.
UNCC has longer basketball history, good baseball history, and did I mention it's in Charlotte?