Np, i know there aren't that many official reviews of the mark 5, so i took a bit of a leap of faith to try one, which saved me money over an AMG or 624i and other than the minor complaints haven't been disappointed. FWIW i've been burned by Leupold, my Mark 6 was the worst scope i've ever had, especially considering the price. I hated it. Glass was sub-par for the price, eyebox was the tightest i'd ever gotten behind, clicks with the M5B2 knobs were terrible, and it was 2/10ths off. Leupold took care of the owner i traded it to though which is good. They do stand behind their product. I was a little weary with the MK5HD but after seeing some positive reviews from the hide and talking to a couple of leupold reps on the design team that stressed that they intended to get tracking down this time i jumped on one.
Hopefully the Zeiss doesn't take too long to come back. I'd love to get my hands on a VX6HD to see how i like it.