I think a few good questions to ask yourself when figuring out what you like about a school are:
-Is there anything particularly amazing about the MD curriculum that you like? (Layout of classes, PBL versus not, setup of early clinical exposure, etc)
-Do the school's research strengths match your interests? Do they have specific research centers that interest you?
-Is it in an area where you would actually like to live? Is that area similar to one where you would actually like to practice someday?
-And of course (as magw11 has already said), do you like the way the MD/PhD program itself is actually put together (size, integration, etc)?
If you ask yourself all of those questions, you should hopefully come up with a list of things you like about the school. If none of those things explain your reason for applying to the school, then you probably shouldn't be applying there in the first place.