Factors to consider:
Manhattan vs Newark
Cost of attendance
Cost of living
Clinical exposure (required number of crowns, dentures, fillings, etc)
Where you felt the most comfortable
It's been said a billion times before, but cost is hugely important. Especially these days. Stare at the numbers. Calculate out how much you'll owe after graduating from each school and then figure out your monthly repayment schedule. Subtract that from after-taxes projected income (maybe 70k?) and that's how much you have left for life AFTER completing the most stressful four years of your life. Consider it. Seriously.