Wow esth I was just about to start a thread on this when I saw yours! I'm just as lost and confused about which school to pick. I'll list my personal advantages and disadvantages below for each school:
CCOM
advantages
-about a 20-30 minute commute from HOME (this means no rent and mom cooks for me

)
-great chicago rotations and residencies
-diverse student population-didn't get to talk to them much though, seemed friendly I guess
-that's all I see as far as advantages go...I didn't have a great tour during interview day
disadvantages
-not much emphasis on OMM (I love OMM)
-primarily a commuter campus...didn't feel like a nice homey campus (I currently attend U of I, so I like a little bit of a campus feel)
-limited technology, everything seems to be on paper, notes and all...not a good school if you like to use technology
DMU
advantages
-great facilities (half of it brand new)
-technology is amazing (Harvey, laptops/pdas given to students, notepool, mp3 of lectures etc. etc.)
-nice sized city with everything closeby
-students seem to get good residencies around the US (primarily in DO heavy states like OH, MI, etc.)
-super friendly faculty and students who are all so excited to be there
-great OMM training
disadvantages
-6 hrs. away from home in chicago (would be nice to have family nearby)
-clinical rotations are more spread out-this could be a good thing though I don't know
-not as research oriented as CCOM, I think doing some research is important if you would like to consider really competitive specialties.
**So that's what I'm looking at so far, don't know what other factors to really consider. I am leaning towards DMU, but CCOM is still in my mind due to the whole closeness of home thing...that is a big deal to me. Oh well, I still have till mid-December to decide. Guess I'll sleep on it now.