I just picked up the Leupold III, ranges out to 500yds on a deer, 800yds on reflective items.I wanted to buy something once & feel as thoughI wouldn't have to upgrade in a yr or 2. It cost $270 @ the deer turkey expo. It has the true ballistic range. It is an awesome piece of equipment. I looked @ Nikon's top line stuff & Bushnell. I felt that u got the most bang for the buck w/Leupold. It is water resistant. The rep said that waterproof means it has to be submersible to 10-15'. In ordinary rain,dew,etc. it will be fine. He said just don't drop it in a lake. It has 3 setting for speed of bows. 5 settings for rifle. It also will compensate for angles & give a true reading vs line of sight laser readings. Another advantage is that for long range targets, according 2 the ballistic setting u choose, it will not only give a reading in yds, but how many inches to hold over the target. Take a look @ all 3 manufacturers, see what features u like about ea, then go w/it. The only disadvantage w/mine is that there is no background light. That was an xtra $100 in the Leupold IV version.