and if your not worried about price i would say a noveski or a knights armament.
ive never owned one of either so it should indicate there are still people out there whos opinions should count.
i have a bushmaster (actually 2) with over 7k rounds each, and still, never a single hiccup from either, and both will shoot moa here and there (more often than not) but im not suggesting them because i dont feel like defending them.
when i first got into the ar rifles, i didnt ask anyone which kind were best. i knew what that revealed. not what is best, but what everyone has (see above). which honestly is fine, theres nothing wrong with that, but is that really what your after?