When a S&H CCa gray failed from a beautiful matched pr - it was like a dagger to my heart! I put the Voshkods into my DAC and amps, and really didn't miss the CCas, so I sold the collection and used the money for part of the funds for a really nice DAC.
I guess it all depends on one's ear and equipment. You are amassing a really nice collection of these tubes - are you going to try the Amperex 'Pinched Waists'? I saw Brent Jesse had a pr for sale. I never heard them, but many say they are the very best of the best. Always curious about them.