Thanks for posting this review. Apart from so much of interest I noted the comment on the new tweeters:
"A new beryllium-dome tweeter. "In order to achieve all aspects of higher resolution, we had to design a speaker that works as well as a microphone," says Stuart. "Beryllium doesn't ring. We're lucky to have it. It's very low on the Atomic Table, and works much better than either soft-dome or diamond tweeters."

This is in contrast to Sonus Faber with their new Extremas where both drivers are beryllium but the tweeter also has an additional diamond coating.

Asa Post