Frankg,
IMO, I would have to vote Leupold. I have only one experience to justify my comments though. As with fellow posters, I too had an issue with windage adjustments. After conducting my own tests at 29 Palms Marine Base along with having fellow USMC armorers inspect the rifle etc I kindly sent it back to Nightforce for inspection. It was returned promptly with a note that everything was in order. Being a little suspicious I remounted the scope and rezeroed again. And again, MOA was off scale. Sent it back and spoke with a technician and was reassured that it would be reinspected more thoroughly.
To make a long story short after 4 trips back to the factory the problem still exists. I now use it as a paper weight and put on a MK4 and haven't look back since.
Good Luck
Verrocchio