If I were you, I would NOT choose AZCOM. Basically, it boils down to this- we have a new dean who does not care so much about the students, but would rather make Midwestern more money. That said, the curriculum 1st and 2nd year are pretty good. One new twist is that we no longer have early preceptor experience, which used to be a good drawing point for AZCOM. Now, we have 5 standardized patient experiences, which I think is not nearly enough. (Granted, I'm biased because I was told one thing during interviews 2 years ago, and now, as a 2nd year student, they spring upon us just 6 weeks ago that there will be no more preceptors 2nd year.)
As far as rotations go, no one really knows. The first class to be affected by a sweeping rotation change (which goes into effect next year) is mine. The school promises good rotations in Arizona (NOT just Phoenix- you will have to rotate in rural locations also), but I have a hard time believing that this is possible with the new class size. In addition, A.T. Still University just opened a new school in Mesa (a suburb of Phoenix). We have been told that they will not take any rotations from AZCOM, but that seems to be wishful thinking.
I know nothing about the other schools you're looking into- I was accepted at 2 other D.O. schools (CCOM and KCUMB)- but if I were you, I would look elsewhere. From what I know about the new dean and the money hungry administration, I would choose a school which cares about you as a student, and not simply your $40,000 tuition. Just my 2 cents.