i use the bushenell sport it is pretty good but i have been in fog or a drizzel and not been able to get a range. before going lazer i used a thumb wheel the zxt75 or whatever it was called, and to tell ya the truth once you become familiar with it, for bow hunting ranges, it is all ya need and it is pretty accurate. In fact some times i wish i would of never gave it to my buddy especially during the fog and rainy conditions. If you do buy a lazer, spend the extra money and get one that is capable of working during these conditions. it probably dose not seem like it happens often, but you would be supprised and you do not want to put a bad shoot on a big buck because you were a tight wad.