I had the chance to peer through a Leupold Mark V monster at Bass Pro Shops recently. Don't remember the precise specs, but it was a $2000 scope. The salesman insisted that I have a look through a comparable Vortex model because, as he said, they are usually a couple / three hundred dollars less in that price range. There was really no comparison between the glass of the Leupold vs. the Vortex. Leupold was very crisp edge to edge while the Vortex was a little blurry around the perimeter of the field of view. My personal opinion, and everybody has one, is that the Vortex scopes are good value for your money in the lower end optics. But, I don't think there glass is up to the level of quality in Leupold's offerings at the higher end of the market. Of course, this is based on just the one shopping experience. But, the difference was that dramatic.