People say CCOM is better because of its reputation and being one of the oldest osteopathic medical schools, and it has good rotation sites. However, IMHO (and this is just my personal opinion) NYCOM has a better curriculum by being systems based (and problem-based if that's your cup of tea), honors/pass/fail while CCOM has grades A-F, equally comparable rotation sites, and the most extensive osteopathic residency program through NYCOMEC (some of which are dually accredited). I want to ultimately practice in NYC or the greater area and so I felt NYCOM provides the better opportunity for that. Its all personal opinion though. I just passed up my CCOM acceptance for NYCOM last night. It was a very very tough decision, since I really enjoyed my interview experience at CCOM.
In terms of education and experience, I don't think you can go wrong with CCOM, NYCOM, or PCOM. The main difference between them are curriculum style, which for the most part is a personal preference. The latter two also have simulation experiences and technology.
(don't want to turn this into an e-peen contest between schools.. just wanted to express my opinion between the two and what shaped my decision)