Well, I have ordered the M60's (shipped yesterday)so the decision is made. I will be moving my sub out of the corner to mid-wall and then calibrating it...this should help the "boominess" until an upgrade....my room is mid sized with 2 large openings to other rooms...the sound of the M22's are excellent but I believe the M60's will give that "extra" in upper-mid range I currently have with my Pinnacle floorstanders. I listen mostly to music and the setup is stereo only........