I think a factor that many of us overlook is where we plan to practice. Imagine the network you can establish within your 4 years in one location. It would be ashame to just up and leave to go back home to practice else where after dental school (although many do it and are just fine). Also if you plan to open a practice with multiple associates, chances are it will be with colleagues from your dental school in that area. Just another factor to consider...may make a difference to some..may not to others.