I would pick up some of the LinLai/Cossor 300B's while they are still available @ a reasonable price - as you like the sound.
With 12au7's as drivers you can have fun rolling them - plus the input/12ax7.
DeKay
Elekit TU-8600S. Best 300B’s?
Just finished building the Elekit TU-8600S kit. Got the “cheap(er)” Cossar 300B’s with it, just in case I made a mistake and blew up the tubes.
Candidly I’m shocked how good this amp sounds. Soundstage is wide and deep, SQ is very detailed and transparent. Drums sound like drums, organ pedals shake the room.
The question is, are the new Western Electric 300B’s enough of an upgrade to be worth $1,500/pair, or is there more bang for the buck with another tube?