NYMC has a very good match list because they prepare students very well for STEP. Can't comment on OUWB. If you are from CA and hoping to return, NYMC may have more support for that since there are so many people from CA.
And the campus at NYMC is isolated, but the area is not at all. You can volunteer in Harlem every week if you want and you can hop on the bus that goes through campus to go to White Plains or ride down to Yonkers.
I actually think NYMC is a lot better than SDN makes it out to be. I just don't like driving and or the limited research opportunities on campus.
Neither school appears to be a bad choice though (but I know nothing about OUWB)
Edit: I am not a NYMC student, but was accepted there and may end up choosing it over some other "mid-tier" schools