2019 300B tubes that are worth the money?

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.

So sadly, after a year and 2 months, the Psvane Acme 300b tubes on the right channel of my Cayin Ha-300 amp started clicking and emitting white flashes. No other sound coming.
I swapped out those tubes for the stock tj full music and now my right channel is about - 20 dB lower, regardless if if swapp around the 300b tubes, the 6sn7 tubes, or the 22de4 rectifier tubes around. 

Amp is only 1 year 3 months old. Tubes bought from chi-fi audio. So aside from having to get my amp fixed (someone said it could be the Cathode resistor damaged by the voltage spike of the bad Acme 300b), I now have to buy new 300b tubes.

So is there a better place to buy them in North America? I absolutely love the sound of the Acme 300b, but are there other similar fast and open sounding 300b tubes I should get instead?