Ian, I have a question.... You replied with this statement "Both the VP100 and VP150 are perfectly timbre matched with the M60s. The VP150 will, however, give you a better overall up front sound stage with your system." But I have posted questions that you replied to about comparing the M80's vs. M60's and you basically say that their is nothing to gain but overall output. How can the 150 be "better" than the 100 and the M80 "not be any better" than the M60. I don't want this to come across the wrong way! It just don't make sense to me. The M80 has more drivers, more cone surface area, high eff. rating?????? Explain it for the simple minded please! Thanks!