There were some discussions about soft-dome vs metal tweeters maybe 10 years ago, and a "your woofers look wimpy" discussion more recently that might have encouraged work on the HP bass drivers, but I don't think I have seen any discussion on ribbon tweeters. There was at least one board member running external super tweeters with his Axioms (2x6spds ?) but those were piezos IIRC.
I would like to try some speakers with the RAAL tweeter and occasionally think about picking up some Sierra Towers with the RAAL upgrade...
... but I keep having to do other things with the money - and besides, I am disgustingly happy with my M5HPs right now, after spiraling through M60s, Sierra-1s and M3s first.
I guess I could upgrade my Sierra-1s to Sierra-2s, but it might be more fun to just buy the tweeters and start a forum thread for hacking the M60 crossovers to work with them.
That would make for a fun GTG when the work was finished
