For the money the Zeiss blows Leupold away. I pulled a VX-II 6-18 off my rifle and replaced it with the Zeiss. The Zeiss has better image and clarity than the Leupold VX-II or VX-III for not much more $.
Pros: Clarity, Adjustability, Ranging Reticle
Cons: None
This review was written in the old system and had content requirements that are different than reviews written today.