You can buy the lowest line of Ziess for $450.00 and you can buy a VXIII for the same amount.The features on the low line Ziess are not as good as the VXIII.Also the Ziess 40mm will equail the light of a VXIII 40mm and less light than the 50mm.Trust me I had the low end Ziess and sold it to buy my leupold 50mm.Did you think about the Adjustable objective in the VXII and VXIII?It lets you adjust the yardage with the twist of your fingers.You don't even have to resight in the gun like you would with a Ziess.You won't have to play the high low gessing game on yardage.You can aslo add in a Sunshaid to the leupold to reduce glair.The Leupold has a Multicoat lens system.The noncritacal eye relief matches the constant eye relief.I have had no problems with my Leupolds.You allso get allot more cross hair choises with the Leupold.You can also have leupold swich out the cross hairs you have now for new ones of any type you want with their new custom shop.They are the best scope I have ever owned in my opinion.I had the Ziess and the Leupold. I'll never look back at the Ziess.It is not workth the extra Money.