I have two Zeiss Conquests, one with Turrets and one with Z-600 reticle. I am very happy with the Z-600, but as with all things there is give and take. The spacing's are set, so you can't modify them for load or condition changes. The good news is that I have a spreadsheet where I compare the drops on my various loads to that of my z-600 and I have yet to be +/- over 2" out to 600 yards. For hunting, this is fine. I'm not off 2.0 moa, just 2". I was unaware you could get custom reticles from Leupold, but doubt I would spend the cash for drop lines, but might to add MOA windage lines for when I use my turret for drop adjustments. The best thing about the Zeiss Z-series reticle is the 5/10mps windage marks go with each seperate drop line so you are not guessing. For whay I've seen there is no way to adjust windage on the Nikon, Burris, or Leupold(except on their Varmit version).