Rich, that would have been a fun comparison--having three floorstanders. I have to say, the M40s do exhibit a "tube" like sound, and subsequently I prefer driving them with a solid-state amp.

Someday I may move on to different speakers, but I think I'm going to hang on to the M40s. After all, they are a collector's item now!

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"Nothin' up my sleeve. . ." --Bullwinkle J. Moose