I set my Parents up with the CMT-340's on the custom stands in a 15' x 25' (35 if you count the entry way) livingroom, with a 12' ceiling....openings are the stairs down to the family room and kitchen. They more than handle the area.

yes...I prefer the CMT-340's, but have not heard them side by side with the M60's for a long time. It is time that I visit spiff's new place and bring the 340's.