I didn't know they were that expensive now, but I've been using a Swaro 10x42 EL for several years on my annual elk hunt. I do lots of glassing every day and these have proven ideal. I am not familiar with all the optical terms and have had limited experience with other binoculars. However, use the Swaros for a week then try to go back to using a lesser binocular that you thought was good. You'll quickly see the big difference...