Good question. I applied to four DO schools (and a host of MD schools): DMU, AZCOM, CCOM, and OSU-COM. At this point I have interviewed at 2: AZ and CCOM. I liked AZCOM much better just from the feel of it, the student body I met, the facilities, and the area (much closer to home). I haven't heard back from CCOM as far as a decisision, but I am not likely to go there, even if I do get in. I now have interviews left with DMU and OSU-COM. I am more interested in OSU-COM than DMU due to the smaller class size, higher avg GPA/MCAT, super high pass rate, and national prestige (US News rankings, etc.).
So basically AZCOM or OSU-COM because they have super high pass rates (both COMLEX and USMLE) and good match lists. I would say I like AZCOM's location and facilities better (keep in mind, haven't been to OSU yet), but I love OSU's curriculum, high avg GPA/MCAT, perfect pass rate on both USMLE and COMLEX, and really small class size. I like that it is a very competitive school to get in (especially out of state), and feel honored to have been granted an interview. I am really looking forward to it. AZ's rotation situation worries me a little. So it is absolutely a toss up. I am, however, really glad to be in at AZCOM (just sent in the 12/15 deposit to secure my space until after the OSU/DMU interviews).
As far as MD schools, I had an interview at Rosalind Franklin and loved it. Great rotations, absolutely outrageous match list (basically on par with Northwestern, Rush, Pritzker, Loyola, etc.), awesome facilities, etc. I don't know if I would go RFU, AZ or OSU if I was lucky enough to be offered at all 3. It's really a toss up. I have an interview lined up at my state school (UW); I would take an admission there over anywhere.