I have the diamondback and the viper. I once had Leupolds on my rifles, notice I said "once" had. I have replaced them with the Vortex and will not be looking back. I have them clear from edge to edge and they hold a very good zero for me. I really think they are worth the penny you give for them. They also have the "best" warranty in the business. It is a no fault warranty and they stand behind it. If you get the chance buy you one or two, you will not be sorry.