Do you mean you're going to either substitute the M3v2s for the QS4s at the side, leaving the QS4s unused, or else move the M22s
now at the rear to the side and either move the QS4s to the rear or put the M3v2s at the rear? And which of those would sound better? I hope you'll try it and then get back to us. I have no idea which would sound better. Direct radiating speakers as side surrounds are sometimes recommended for large rooms, which is not what you have, so I'd side with sirquack and guess that your current arrangement sounds better than the two alternatives you're considering.
I am taking the OS4's out of the equation so I can either keep the M22's at the rear or move them to the side and put the M3's at the rear. I think the M22's would probably do better on the sides.
