I have both Vortex Viper binox and spotting scope. They are high quality and are very good for the money but they are not on par with the Sworovski. I purchased them at the Eagle Optics store in Wisconsin. I believe that Eagle Optics is the retail arm of Eagle Optics. The store had spotting scopes pointed out the window and across a field at an eye chart like you find at an optometrists office taped to the outside all of another building. It was a good distance away. When I looked at it through the Swarovski it was very crisp and clear all the way out to the edge of the lens. The Vortex was very good but not as clear. However it was about 1/4 the cost. I am very happy with the quality of the Vortex products.
