I hunt mulies, antelope, and elk in AZ, but mostly mulies with the bow. when it comes to optics swarovski rule, everything else are toys. swarovski sits on top of my rilfe, and pair of 8.5 x 42 EL (which cost as much as the 15 x 56 ) hang around my neck.I also use to own a pair of 15 x 56. I used all three on my last antelope hunt.I sold the 15 x 56's and kept the 8.5 x 42's. I'm not saying the bigger glasses are over rated, I just found the smaller ones to be just as good. My opinion. Try out as many in the field first.