I've owned 2 1911's. The first was a Springfield Milspec. It was ammo sensitive but hey it was a Milspec. Put ammo in it that it liked and good magazines and it would run without any troubles. I kept that one for about 20 years, shot thousands of rounds out of it and it was running fine when sold. The second is a Sig Sauer 1911 Max Michael. After selling the Springfield I really missed not having a 1911 in the collection and bought the Sig about 4 months ago. This one hasn't hit the 1000 round mark yet but as of today has been 100% reliable and has digested everything I've feed it.

I guess I've just been lucky.