Can't speak for other schools but I can say that UNTHSC/TCOM has THE highest pass rate on COMLEX Level I and is almost a full standard deviation above the rest of the osteopathic schools in this area. It's a great school that, so far, really prepares you for doing the job. Sure, every school has areas to improve, but in terms of getting you ready early, giving you a solid foundation during the first two years, teaching you how to think and really caring about the students, you can't do much better. The associate dean is a master educator. You have to experience how much you learn from his Clinical Integration Lectures to believe it (he teaches Respiratory 2).
I was also thinking about Kirksville and the admissions department really went out of their way (so did the one TCOM) to work with me on my application. They really counseled me through the process and gave me time to make some crucial decisions. Good people at both places.