For $, I'd say RVUCOM, but I dislike that they're for-profit and have no match lists yet. For all other things, except for the grading scale, AZCOM seems like the better option. They're established so you're not worried about the quality of clerkships, you get to stay in Arizona, they have a good match list, and lecture attendance is non-mandatory. I'd personally reach out to some students at both schools and ask for their opinions. Do DO schools offer scholarships ever?