I'm at one of those rare programs in Ohio. If you want to do EM and stay the DO route, the hospitals in Ohio are arguably the best for your opportunities. I know that places like Lehigh Valley that are dually accredited are pretty good too, but if you go to ABOEM's website, the 4 on the list are exceptionally strong (FYI...Cuyahoga Falls and Massilon/Affinity are wrapped up with South Pointe's program). Genesys in Michigan is strong too.
I rotated through both allopathic and osteopathic programs during my time in med school. There were things about both that I liked and disliked. I fell in love with my program because we had all the services of the big hospitals (Trauma, CT/Neurosurg, Chest pain/Stroke center, etc) but everyone was happy. Everyone knew everyone else in the hospital, and attendings (not necessarily the EM ones, but the others....IM, CT surg, Cardio, ICU, etc) were not malignant and treated you like peers instead of any other way. I could get that huge hospital feel, but really get to know people instead of being in a patient mill.
It just depends on what you're looking for in a program. At my place, we have enough critical patients to go around twice and three times over. But, you can go to any allopathic program and have the same issues....people fighting over the critical patients, etc....it's not immune to the osteopathic programs. You'll always have that no matter where you go. Everyone wants to take care of the septic guy who needs tubed and lined, but nobody wants to take care of the PID or the pharyngitis.