Bah, the receiver came today but I can't take an hdmi signal and output thru component cables and I don't have the new tv yet. No down-conversion. I'm not sure what I was thinking. So setup will be delayed a while. I'm not interested in disturbing my current setup for the weekend if I can't do it right. Probably Monday I'll hook up the M80's, VP150 and QS8's and play them all day and see how they handle everything.
On the big plus side for me, the Onkyo is 5 inches less in depth than my HK AVR630. So this means the Onkyo will fit into my cabinet and I don't have to put it all the way on top on my entertainment center.
Followup question though: at what point would it be absolutely necessary to upgrade to a more powerful receiver? When you add the surrounds? Or could the 607 handle the M80's plus 2 surrounds?
If the Onkyo 607 doesn't have any problems driving the M80's, there shouldn't be any problem driving a center, surrounds, rear channels and a second zone.