I was just thinking that depending on what speakers you are looking at you may need a receiver that is 4 ohm compatible.

I currently use my M22's and QS8's in a basically 10x15 room but planned on it being in a 13x20 ft room and JC from Axiom said that would be fine, but if I could go floorstanding M60 it would be better. These speakers can be played loud without pushing them, so you are good with the M22's, but if you want to buy an amp that goes to ELEVEN.....go M60's with your VP150 and QS8's.

The EP500 is outstanding as everybody says, but you may find an equal or better sub from HSU or SVS for less $$.

The amp you are looking at is reviewed here.. RXV661 review

in the same range is the Pioneer 1016 VSX 1016

Or the Onkyo 604 or 674. Onkyo 604 Onkyo 674

good luck with your choices