its nice that polk upped the power handling in their new line. keta makes a good point about the m200s not having volume control, but i think you could get around that with the gain for each channel on the receiver. and for the reason that keta mentioned i would not use the monos for the surrounds if you get a 5 channel amp also, because you are going to destroy the surrounds by not being able to turn the monoblocks down at all and the trim for each channel wont be enough. just get the 5 channel now and use the onkyo to power rears :-).