The best function this glass provides is convertibility. I spot and stalk with them as well as still hunt with them. So they're perfect if you are searching for glass that you can easily carry and use on person, and you can use with a tri pod. For long hikes to your glassing positions, these are perfect. Honestly, they do it all and in those twilight moments black tail hunters depend on, these lighten up the eye, making the most important time easier on the hunter. Look, if it's your passion, might as well have the best, I saw it some where else but "buy once, cry once" … that's about all I can say..