About the best speaker I ever heard was a ribbon speaker made by Apogee. Apogee is gone but I will never forget their sound. Not long ago, Ron S of SVS said that his partner, Tom Vodhanel was using ribbon speakers. Apparently I am not the only one who likes the sound of ribbons. I don't know if Tom's are dipoles like the Apogees or forward radiators like Newform. Since Tom is using ribbons, perhaps he and Ron will consider them for a high end full range design next year.