Boutique Label Remasters

I've been spinning through my Andante label classical remasters recently ( ). The Mozart Chamber collection from the Salzburg Festival 1956-1991 is a favorite. Also, the Willem Mengelberg release is something I can never tire of. I could go on and on. What boutique labels and which recordings on those labels do you cherish? Any genre appreciated. Japanese paper sleeves also apply. I'm always interested in finding new titles.
Apparently a lot of Qobuz and Tidal loyalty here.
Most classical labels could be described as boutique, once players such as Sony decided there was no money to be made in Classical Music