I tend to agree James, although I don't know anything about the new unit/material. I find all other changes to be intelligently conceived; not genius, but the genius outcome from consistent application of basics. Hopefully this driver is similar. That said, I don't think one can argue with beryllium; but that might have meant rethinking the diamond tweeter. I think the cabinet design is definitely as good as if not better than any other I've seen. I find YG and Magico crude-and of course they don't really address the issue of the large speakers on reflections. It surprises me that they both basically use boxes; so old fashioned. B&W's Nautilus is an epitome of good design in a number of ways I find.