I don't have much to add to the above -- my congratulations on those acceptances, and best luck in the future -- except that this is exactly the situation recruitment/interview weekends were designed for. Go to both schools, meet with the faculty, meet the graduate students, check out the area, check out the institutional resources, and then ask yourself where you want to be for the foreseeable future. And remember that, as mentioned above, there's going to be a major economic difference between that astounding 30,000 dollars in Charlottesville and 19,500 dollars in Chicago.