For what it is worth (absolutely nothing), here's my advice:
First and foremost, choose the school where you will be happiest. And I am speaking of "quality of life." You will spend four years in medical school, and I would strongly recommend you attend an institution where you will be sincerely happy with life in general. Unhappy students do poorly in school, and learn very little. What makes you happy is totally up to you, whether it is proximity to a support system (family) or climate, etc.
Beyond this, if you are convinced you would be equally happy at both institutions, then I would strongly encourage you to inspect each program's third and fourth year curriculum. Attend the school with the most flexibility. Some osteopathic schools will assign you rotations at a hospital that you may not be thrilled about attending. And then, when electives come around, they may choose to restrict you to primary care electives. This could adversely affect your career, should you find yourself wanting to pursue a non-primary care field.
In sum, I'd take a microscope and examine the clinical years of the schools you are considering, and favor any school that gives you flexibility -- both in terms of hospitals you can attend, and electives you can pursue. I'm sure there are third and fourth year students available here that can tell you how their rotations are setup for their schools.
Best of luck to you, and welcome to the profession.
