I bought a Bushnell 600 in 2000. It has ben to on four trips plus I never go into the woods in here MI. with out it. I have had no problems to date. My father has the yardage pro. He's be to Canada, Wyoming &Colorado 3x with it with no problems. Plus he's an everyday whitetail hunter here. I think the more $$ [:-]you spend the better rangefinder you will have.