I had an AO 1911, bought it many years ago and it never was right. Sloppy fit, poor accuracy, poor reliability, did not compare well with Colt or Springfield.
That being said, the new AO made by Khar is supposed to be much better. Yesterday, I handled one with a Commander length slide. It was the new production model and seemed to be well fitted and finished. Still not a Colt, but a lot closer to a Springfield Mil-spec. It did have small sights, something that Khar should, a maybe will, change.
About six months ago I handled a new AO, supposedly made by Khar, that was horrible. It seemed to be just like the old AO guns. I did notice that the Commander I saw yesterday was not made in West Hurley, NY. This could be a clue as to exactly when the gun was made and from what parts. Those West Hurley guns were made from the cheapest parts available and were frequently out of spec.
If you decide on buying an AO, give it a thorough examination and compare it to a Springfield Mil-spec, if possible.