My VX5HD has the nicest glass of any that I own. My collection includes VX3's, VX6, Zeiss's, Athlon's, and Nikons.
About 6 or 7 years ago, I started going with Zeiss's because I felt their glass was superior to the Leupolds. Ended up with the 3-9 and 3.5-10 Conquest and a 3-15x42 Conquest HD5. Then I picked up the Leupy VX6 2-12x42. I still wasn't that impressed, even though the zoom range was great for my needs (black bear).
Last year I picked up the VX5HD in 3-15x44 w/illuminated reticle. It is absolutely incredible! I even compared it to a couple of my buddies Swaro's Z5's. To my eyes, the VX5HD wins! The turrets are a great design.
Due to not having enough time behind the turrets, I can not say if they are repeatable in the long run. But if you are not twisting turrets often, I can honestly say, I don't think you can possibly beat the VX5HD, especially for the price.