I'm currently considering upgrading my Denon 3805 to one of the three receivers named in the subject. The Pioneer is my favourit but is it powerful enough for my Axiom-speakers (VP150, 2*M80, 2*QS8, 2*M2, EP600)? What about the Onkyo? I've heard of quality-problems with Onkyo. Is it better with the 3009-generation?