You're not going to get a very good answer from this, as even the perspective of 3-4th years and even residents is still limited, and what would be more important is what a practicing physician's advice would be. I started to notice that the people who complained about preceptorship rotations did so because when they went somewhere else (i.e. more structured teaching hospital with residents and interns) they felt more lost and unprepared, but this had more to do with the formalities of the structure rather than the actual practice of medicine.
I don't know much about how AZCOM does their rotations, but be aware that with Kirksville you can opt for a preceptor-based site (Utah, some in Missouri, some scattered around) or other locations that are hospital based (Des Peres [St. Louis], Doctor's Hospital [Columbus], Henry Ford [Michigan], Kirksville, etc.) or even opt for places that are mixed (Phoenix).
I recently talked to a 4th year who did his 3rd year at a preceptor site and came back to Kirksville for his 4th year. He said he learned more in a preceptor-based environment. Others have held opposite opinions. The most common pros I hear about preceptor-based is that you get to do more (several people tell me that on surgery, for instance, they're always first assistant, as opposed to being 3rd-4th in line behind residents and interns). A common pro that people reference is that at teaching hospitals with residency programs, you can get a lot of "face time" (a fancy phrase for ass kissing). A lot of people will tell you a lot of different things, but just research it best you can.