I have just got done with a 2 week demo of a Onkyo 805 and unfortunately even though it's power output and features were great it had some serious flaws IMO. Audio/Video syncing issues was number 1. Number 2 was that fact that it shut itself off twice when I played music loud continually (85-100db).

HG Cherry M80's, QS8's, VP150, and a pair of EP500's