I believe Steve, "Whatfurrer" here on the forum, uses M22s as surrounds and speaks highly of them. If you're into listening to a LOT of SACD, and DVD-A, then having monoploar speakers, like the M22s, is a good idea. But, if you don't listen to SACDs and DVD-As that much, listen to regular CDs and watch movies a lot, then the QS series speakers would probably be a better choice.
However, even if You DO listen to SACDs and DVD-As, the QS series speakers can do a great job with them. From
this article:
"
When this speaker is side-wall mounted, the net effect is both an ambient wash of atmospheric sound that mimics what’s heard in large cinemas, coupled with higher-frequency directional acuity provided by each QS speaker’s dual tweeters firing at diagonal angles across the listening area. In many applications, this is an ideal state of affairs, because it preserves ambient and directional effects for Dolby Digital/dts movie soundtrack playback while yielding fairly precise directional information for multichannel DVD-Audio or Super Audio CD (SACD) music listening, with an added ambient component to enhance musical "hall" sound."
