I learned something about glassing last year. I was using my Leica binoculars to glass some big country last year. My hunting buddy had on an Eberstock Just one back pack , which is really neat, when he pulled out a Swarovski angle eye piece spotting scope , I think 20x60 power and hooked it up to a tripod. Now we're talken! What a handy deal. You could see horns on mule deer from over 1200 or so yards away. We did see a nice shooter. As the matter of fact we went back to camp and had some lunch, saddled horses, rode about 4 miles or so around to ambush these bucks. Found them before dark and scored a 28" 4x5. Now, the whole hunt would not have been possible without that spotting scope. The binoculars can't do what a spotting scope can and visa versa. In big country I'm convinced you not them both. There's a success story.