I found the four tower versus two tower with subs comment interesting. Daryl said he judges result by listening and asking if it sounds "natural". (watch for Argonaut to click smile emoji)
It would now be interesting to watch Ron interview Alon Wolf about his design goals and the new M7 asking the same questions.
He must have said the word "natural" at least 5 times. I also liked his emphasis on live unamplified music as reference.