Just do your research.
If you want trauma experience, look for a program where you will be on call a little more (where they take less residents). If you are looking to teach in the future, look for the programs that offer a masters. If you wnat sedation experience you have to ask b/c some programs don't do much of it b/c the majority of private practices don't sedate.
Apply to alot of places and try to ask the "right" questions at your interviews. You will know which programs fit your personality the best and which one's are just not for you.
For me, I am at a program with 3 other residents (they accept 2 per year) in an environment where I am treated like a colleague, not a resident. I like that relationship alot more than a "school" situation where my prophys are being checked and my charts are being nit picked to death. I am on call a lot, which is hard at first, but am seeing so much great trauma (oxymoron) that it will be worth it in the end.
If you do it right, the match is truly a match.