@tvad
Sourcing good tubes is definitely a consideration. They’re not as easy to find as they were just five years ago, and the adventurous pleasure of tube rolling can be an expensive crap shoot.
Frankly, it’s a good argument in favor of Pass Labs and First Watt Class A solid state.
tvad,
It appears you may be referring to vintage tubes I gather. That’s what i use, and... also some new tubes too with great success. By chance have you tried any of the latest version new production input tubes such as Sophia Blue, or PSVANE MKII, Shuguang Black Treasures, or former TJ Full Music, JJ gold pin Frame Grid tubes - in any of your preamps or for amp input tubes?