I bought one speaker from Salk (a center channel with the RAAL tweeter) and ended up replacing all the speakers in my home theater including two subwoofers and upgrading the center channel as well (for which Jim gave me full trade in value as it was only 6 months old!)
In my room, to my ear, the RAAL blew me away with the sound stage and vocals. I haven't been blown away like that in a looong time. Jim told me I'd probably like the
beryllium more but I was so smitten with his special RAAL (RAAL 70 20 XR amorphous core to be exact:
https://loudspeakershop.eu/pobieranie/raal-70-20xr.pdf)
I had to have them and didn't want to chance the BE tweeter. YMMV. All I know is I can't get enough of the RAAL and vocals (esp female) are out of this world. My non audiophile brother in law said I hate this song on the radio but I absolutely love it on your system. It opened his eyes to how much of the music he is missing.
The price point on these is incredible value (to me) for what you get in sound, the build quality and infinite customization options from paint/wood/dyes, to internal wiring etc is icing on the cake. It really makes you look at other brands who are selling low end speakers in a non custom Chinese made cabinet for double or triple the price in a really different way. (nothing wrong with China just saying the price you pay at Salk for custom locally made enclosures is a great value!)
Since it is impossible to convey how something sounds via text I'm in CT and if you or anyone else wants to demo Salk/RAAL or Rythmik just send me a PM.