I agree with yaah.
Unless you are going for and MD/PhD and/or want to be a bench researcher, I don't think it is worth the $$ to go to one of the expensive private schools, even if it has a higher ranking than another, cheaper school that you were accepted to. Of course, everything is relative. If you get accepted to Harvard and it's going to cost you $5k/more per year, vs. another school that you got into that is somehow bottom of the barrel (terrible neighborhood, on probation from the powers-that-be, etc.) then yes, pay the 20k extra to go to Harvard. But most cases are not like that. Most cases where students are making this choice are something like, "Should I got to my state school, or should I pay $20k/more or 25k/more per year to go to this mid-tier private school that served better bagels on the interview day and seemed to have 'cooler' extracurricular activities?" And I would honestly question whether it IS worth that amount of extra money to attend somewhere like Georgetown/GWU/BU/Mt Sinai/insert other private school.
I also think that people forget that it may be harder to be AOA, or at least in the top 25-30% of the class, at a very competitive medical school vs. a lower tier one. A student who is AOA at a mid or lower tier school is likely to do just as well, or better, in the match as a student buried in the middle of his/her class at somewhere like Johns Hopkins or Washington U. I think there is no absolute right or wrong answer that we can offer up to every potential med student about which type of school to attend. Anyone with multiple med school admissions offers is definitely fortunate. I do think that depending on one's level of debt and perhaps personality type, the debt load is something that can affect performance in med school and residency, though...the stress of knowing one has this huge debt load hanging there, and/or of trying to pinch pennies on little things like shopping for clothes, etc. can add up over time.