I have used the Bushnell yardage pro sport, the nikon 440 and 600. I feel they all were good to use when bowhunting. The nikons are smaller, and offer better lasers and the scan function. The Bushnell would not shoot through my shoot through mesh on my ground blind when the nikons would. The nikons 440 and Bushnell will not shoot through glass, but funny thing the 600 nikon will. I just sold my bushnell after my cousin who let me use his 440 this year bought me a 600 for xmas after I guided him to his buck of a lifetime. Hope this info helps...
~Jeff