Mayza,
You might also want to consider just how far your willing to travel for schooling. I'm a michigan resident. This was a big issue for me. I think the furthest school I applied to was Nova. It's costing me at least 200 dollars round trip just for an interview. Not to mention flying home for holidays should I be accepted. Many of the schools I applied to also have residencies here in michigan which is helpful. I already plan to be at least $100,000 in the hole before my education is all over. I'm trying to save where I can. It cost my buddy over $1000 round trip to arizona last year for an interview. In anycase try to narrow things down to where you really want to go. If your only appling because of the ole saying don't put all your eggs in one basket, then your gonna look kind of silly in the interview when they ask you why you want to go to their school. If money is no object and you would be happy at any of the schools, I say apply to all 19. Except W.Virginia, you really do have to be from the appalacia region to get in. If your grades and everything else are up to par than you have at least a fighting chance everywhere else.
As for research, the primary goal of "all" osteopathic schools is to produce primary care physicians (ie family doctors) to serve underserved areas within their states. Note the quotes around all, there is always an exception. Many of the Schools do highlight research in the pamplet, but it is not their primary focus. Of course many MD schools say the same thing. So it really comes down to whether or not you subscribe to Osteopathy or Allopathy. You can pursue your dream in either field.
DocGibby