I've been very satisfied with my AO. Have had it since '08. I had some ejection issues with the extractor not keeping a proper tune, but a quick swap out with a Cylinder & Slide one seemed to have solved that problem (got tired of readjusting the extractor tension all the time). That, and a new set of walnuts, I've pretty much kept it stock otherwise.
The most impressive thing about this particular specimen is that it will feed absolutely EVERYTHING, even empty brass. Up until I got my Maverick 88 12g shotgun, this AO was my primary HD gun.
Back when I bought the gun, I posted a range report of it over at another forum. Just checked and the thread is still there.