Hello, I've been shooting for over half my life, however, just starting to get into shooting rifles at a distance. I picked up an FN SPR in .308 and now need to get some glass for it. I have ranges in about an hour drive out to 700 yards, but I don't expect to be shooting past 500 anytime soon. I was thinking Leupold MK 4, but it seems that many on this board feel the quality control has slipped to a point of no return. I can't afford a $3000 USO, however, a Nightforce is possible. If I could also get opinions on starting out with something like a USO ST-10, as opposed to a variable power Nighforce that would be great. Thank you in advance.