I can tell you this -- my dad's rifle, that dates to 1949, still has a Weaver K6 on it, and it's still bright and accurate. Let's hope the current models are as well put together.
I ran a 3-15 Weaver tactical on a 308 that I had.The scope performed flawlessly. I havnt tried one on anything bigger. The glass was clear and the turrets were nice but I do think they were a bit over priced.Theres a lot of good glass out there when your concidering paying $800-$1000.