Todd, I use a Bushnell Yardage Pro Legend, and love it. IMHO it is the best bang for the buck on the market. It is very light and compact, it is waterproof, and it floats. Furthermore, it is reliable. I have ranged deer out past 600yds, and rocks and trees over 700yds. It will hit a reflective target over 900yds (haven't tried it though). They are $427 from Higginson powder, a great value. I have packed numerous other models, but never owned one before due to the cumbersome nature of the others. This one is small enough that you WILL pack it.
StoneChaser