I did not get into either and I would have really liked to. As an Ohio resident, I would have chosen OSU, unless you want to work in Washington DC. Mason is very good too, and if they had particular programs of interest, then that is your best choice. Consider the debt, but also consider where you will feel more comfortable and be able to do your best. Ultimately, nothing else matters as much as where you will do your best (IMO)
Cheers