Are you okay staying in DC? Because if your grades are at the median or below (and maybe even slightly above), look for little options outside of DC. In other words, is the $120k worth the added stress that will placed on your grades, if you are looking for geographic diversity? Also, what kind of work do you want to do? If it's high-profile business transactions or government work, Harvard is clearly the better choice. Harvard is also better if you have any inkling for academia or think you might. I'd go with Harvard, but I'd be so anxious at GW because grades would matter more, which would just make me unhappy.