Cts, the Vandy 7 is a great sounding speaker given the right room and
accompanying equipment. And Vandersteen aren't standing still with
the release of the Vandy 7 Mk2 which by all reports is outstanding. I used
to own Marten Coltrane Alto's which used all-ceramic Accuton drivers top to
bottom, so I agree there are some advantages in using identical driver
materials. Interestingly, the Magico S7's use very similar materials in all
their drivers, incl: a diamond-coated beryllium tweeter (diamond being a
form of carbon), and hybrid carbon Nano-Tec/Nano-Graphene in the
midrange and bass drivers. From what i've read, the new drivers are a new
thing and breakthrough for Magico. Doubtless Magico want to stay ahead
of the game of manufacturers like Tidal, Wilson Benesch & Vandeesteen.
As you said, in the end the winners are we audiophiles.