2019 300B tubes that are worth the money?

A word of warning if I may:

the SQ of different 300b tubes is dependent on the rectifier tube used: on my Wavac EC-300b when I switch from the EAT300b to the Takatsuki, I equally switch from Svetlana Winged-C 6L6 GC to Tungsol KT66. It gives the Takatsukis a rounded, more bass sound whereas the Svetlanas lead to an over-emphsized treble. Conversely on the EATs the Tungsols sound slightly sluggish and thick.
Tube rolling is a complex subject but well worthwhile.

Let's keep this thread active, but increase it's usability. Please specify what equipment you are using your 300b in. And any details (if available) about bias, driver tubes, etc. Not trying to get too complicated, but I think these details might be relevant to our discussion.

Thanks,
Markus

I am using the Psvane Acme Supreme 300B tubes in my Cary Audio Founders Edition 211 FE amps and they are biased to 100ma. They are the best sounding 300B tubes I have used to date. Prior to those, I was using a couple different pairs of the more expensive  Shuguang tubes with good results.

Mactone MH 300b stereo amps with factory supplied Electro - Harmonix tubes. 
The amp has been in use for over a month. It is a 22 w push pull class AB design, not single ended. And they are driving Eminent Technology LFT-8b’s ( 83 dB ) with amazing ease. I don’t know if the selection of 300b’s are less critical in a push - pull configuration than SET. However, I am in no hurry to try new tubes. And I am enjoying very  the amount of information provided here regarding the various 300b’s.

I too urge caution in purchasing Sophia 300b tubes. They failed prematurely, but the warranty was honored. I sold the replacements immediately. BTW, they were no sonic substitute for WE originals from >50 yrs ago by date code. I am trying to minimize the use on the WE. At true AARP-age, the WE may outlive me.