The only reason i picked the QSC, is i can get 1 new from Musicains Friend, have it in a couple of days. 30 day try out. I've done alot of buisness with them before. If for some reason it is the M80's, and they toast the QSC... I can just send it back to them, say it was no good out of the box. They will just send my money back no questions.

Better to blow the QSC, then my Onkyo.