Between the kids and I we have a bunch of Z3's either 3-10x42 or 3-9x36, for the price they are my favorite scope. I will say the adjustments are good, but not perfect.The optics/view is awesome to my eye. I can't really speak to tracking because once I work up a load I'm kinda a set it and forget guy with a max shooting range of 400 yards or so, not a turret twister.
One of my oldest Z3's sits atop my 7 3/4 lbs 300 H&H, I've had it 6 or 7 years, adjusted it like 2-3 times over that span during practice/zero check in and it has around 400 shots down the tube so far. That same rifle took a very nasty fall down a Colorado rockface, held zero and killed my bull at 379 yards the next day.
