GWU vs. BU vs. U Pitt vs. UConn Which one?!?!

I’ve narrowed my college options down to these four from the 13 I applied to. I am going in as a biology major and definitely want to go to Medical school after undergrad. My question is which would be best? I know Univeristy of Pittsburgh has a very highly ranked medical school, but my sights have always kind of been set on BU. I love the location and the overall city feel, there is just one thing holding me back; grade deflation. Can anyone tell me if the rumor of grade deflation at BU is true? Also, I have only been to the U Conn and BU campuses, I loved BU but not so much with U Conn. Should I go to the other two before deciding? Is one school more likely to get me in a better place for med school? Which one is best overall?

http://talk.collegeconfidential.com/pre-med-topics/1484178-if-you-are-in-high-school-please-read-this-before-posting-p1.html