A while ago, the new Western Electric factory issued a query to find out what the general population wanted in a new tube reissue, I challenged them to try and match the Russian 6H30 "DR'. So far, no response.
6H30 Tubes
Everyone says the sound of these tubes can’t really be changed, yet there are cheap as well as very expensive versions available. I use these in an AR preamp. Aside from matching the tubes, can I get a better/different sound going to a more expensive tube? My current tubes came from Upscale Audio and if I recall were well under $100 each, maybe even the pair. I know there's threads on these here, but maybe there's updates on what folks have tried.