The M1 system sounds spectacular. Most "systems" i have heard in that price bracket and above sound fake. The M1 should have a certain kind of appeal for musicians with deeper pockets, imo..
Is it priced too high? To me, it is, but so is every Wilson and Magico and Schweikert in that price bracket that also sounds fake! The latter is for the thrillseekers.
I don't believe there is a DHertz house sound.