As other posters have said, MD residencies are often found at large academic centers, whereas DO residencies are most often found at community hospitals. At least that is the theory. In reality, many, possibly even most, MD residencies are at community hospitals too.
We hear lots about Hopkins and Mayo, Mass Gen, and UCSF, but those really are only some of the MD residencies. Many are to be found at X Community Hospital in Normalville, USA. By the way, that's probably the kind of place where most docs, MD and DO, end up practicing.
A local Ob/Gyn around here made the point that part of what drives up the cost of healthcare is the obsession with prestige. Our first instinct, he noted, when diagnosed with cancer, is to seek out some big-name cancer center on the other side of the country, when in reality, a good, local oncologist can offer just about everything the big name center can.
Don't get me wrong, academia has a crucial role in medicine. Someone has to do the research that drives medical science. Most of us, however, can benefit from that research wherever we are.