@jackd by chance were you able to compare the new Rev7 SE speaker with the ScanSpeak Illuminator Ring Radiator tweeter to the other Satori BE tweeter version speaker?
While I've never tried Fritz speakers, I've followed him through @hilde45 's journey some and I've personally used some of the same Scanspeak drivers in my own speaker builds with great success. That new Rev7 SE version looks interesting.