The weather has been hideous and I need to develop a new handload for the gun it is on (and I try to develop handloads in moderate temps) so hasn't left the safe. But soon, I tell myself, as they predict more snow tonight I will post a review after I get a chance to do a box test and a series of different distances. I will say I like the smooth lines/low profile while still including elevation/windage/parallax dials + cant indicator. I also checked the glass off my deck into the woods at the edge of dawn one morning and was pleased with what I saw. If the sucker tracks, it is a keeper. Never shot (or held) a Z5 so can't offer comparison.