I don't know how many would agree with me, but the Pioneer Elite VSX-21TXH (the cheapest of the Elites) IMO, seems to be an excellent receiver for the 8 ohm loads. I have excellent sound coming from my M22's with this receiver. Although I paid $630 from a Best Buy store, I know you can get it a lot cheaper online.

Just my 3 cents worth (due to inflation).