U.S. Optics is my favorite. I have an SN4 1.5-6, and two SN3 3.3-22x FFP MOA/MOA. Awesome glass, but heavy scopes. The SN3s' have taken me out to 1760 yards multiple times and are by far the best tracking scopes I own. I have not owned any Nightforce, but I would not hesitate to use their optics. My low end rifles wear Leupys VX-Patrols.