I have a APV on a 10/22, excellent scope, no problems in three years of knocking around. Over a year ago I bought a Mueller TAC II for my M1A, used a Sadlak mount with Burris xtreme rings. Been a bullet proof setup.
Mueller doesn't have all the bells and whistles, no side focus or target turrets, but for the money you can't beat the quality of the glass. I would rather spend the money on powder, brass and bullets.
Mueller uses a German manufactured coating, applied to Japanese ground glass in Japan, then assembled in China. I called customer service a few times before I bought the TAC II, they are very helpful and knowledgeable. I have only read about one bad scope, an APV, and from the general consensus on that forum, it was operator error.