Jeff, I think for the most part, they have somewhat. Then again I have a very old (1970s) Weatherby (German) scope, whose optics are very clear. I have pretty good eyes and for the most part, I just can't see THAT much of a difference between scopes costing a couple of grand like the Z-6, S&B etc and a much less expensive Meopta or even a Leupold which BTW are the only two brands I buy now. I love my Zeiss Victory, Swaro Z-6s but had I known what I SEE now, I would have just stuck to Leupolds and now Meopta. Maybe Mule Deer will chime in, but more importantly PUBLISH that second Optics book!