I went to the Scottsdale Speakerfest earlier this summer, and heard one of their medium floorstanders with a beryllium dome tweeter and I was very impressed. The speaker in was very good, not the best I've ever heard, and in total wasn't the equal of the ATCs that were playing in the same room, (nor were they as expensive) but they were good, and that tweeter was superior; very open detailed and crystal clear.
Salk Audio Sound
Looking ( still ) for new speakers to replace old Spendors ( with a Leben tube amplifier). Had narrowed my search to Devore Super 9, Proac D30R, Sonist Concerto 4 when the itch to save some money cropped up ( two tuitions due this week). Have been hearing about Salk. Some have denigrated as "hifi"- ish; whatever that means. Seems like a great value and certainly has his following. Unfortunately, can't find them to hear for myself. So are the Salk speakers on par with the other possibilities above?