I don't think the glass (dollar for dollar) is near as good or as clear as Leupold NIkon or Zeiss in the same price range. Sure you can jump up to the Viper Line and get some good Optics but then you are over paying for what you are getting compared to those companies.

The Diamond Back Series is basically on par with Bushnells entry level glass the Banner series and Simmons higher end series. Leupold Vari X1 will beat it and Vari X11 will blow it out of the water. Nikons entry level Buckmaster is a huge improvement and priced about the same. Redfield's offerings IMHO give it a good run for the money. I just don't see why everyone says its the best value for your money when the glass is not all that great. Sure the warranty is good. But so is Leupold, and Redfield.