I hunt mostly open country of the west, so factor that in to my comments. I spend a lot of time obsessing of the perfect rifle, load combination when in fact a quality bino trumps the rifle issue. It's importance in the kind of spot and stalk hunting I do can't be over stated. I'm currently using an older 10x40 Zeiss glass and they seem fine to me. I have way more hunts behind me than ahead of me otherwise I might upgrade to a high quality image stabilizing pair.