Did you apply to Fordham? That seems like the best bet for NYC.
I'd say if you're unsure about where you want to practice, Vandy might be the better bet. Hard to say though. GW places well in DC, NY and areas around DC (Baltimore, NOVA). But if you're interested in the south, Vandy's a no brainer. If you're 100 percent set on NY, GW might make that a little easier.
Anecdotally, I know a Vandy alum (he graduated in 99) who advised me to take Fordham with 10k over GW with a full ride, because he really felt that having the alumni base of the school was most important, because he had a hard time making Vandy travel to NY. I don't know how much has changed since then, or if it was the bad economy or what.