Psvane 300-B Tubes ? ? ?


Does anyone out there have any experience with Psvane 300-B MKII or their WE300-B Replica tubes ?  

I found the best sound from initially the Sophia Princess mesh-plate 300-B's, then their Royal Princess 300-B's however I'm definitely NOT happy with their reliability, especially the Royal Princess !  
I had a mesh-plate from new have a glowing spot on the mesh-plate, and they told me it was from sitting on the shelf for over a year !  REALLY ! ? ! ?  And I had two Royal Princess tubes go out with less than 600-hours on them, unfortunately well-past 1-yr. warranty.  Left a bad taste...  I'm NOT going back...  
I've tried EH gold-grid 300-B's, Gold-Lion's, JJ's...  All sound somewhat different but the Sophias sounded the best, however in my experience, reliability is questionable...  Thanks...  John  
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Thanks for this information.  I have heard the Emission-Labs 300-B (not the XLS variant) and they sound good however not as good (in my opinion) as my Sophia Princess mesh-plates tubes.  I'm looking for a substitute, as I believe I'm on borrowed time with them.  
Part-Time audiophile reviewed Takatsukis in one of the BorderPatrol 300b amplifiers - not sure whether it was the PSET design or the SET or PP design. As I mentioned, I love my Takatsukis; however, you need four of them. Pricey. You might consider the KR balloons.
I have heard the Sophia mesh (actually a perforated plate rather than a true wire woven mesh) in my system and it's quite different sounding than the EML.  I can clearly understand why one would prefer one or the other. Numerous variables of the listener and system exert their influence. 
Charles 
Charles,
Numerous variables of the listener and system exert their influence.

+1 on that statement.

I don't believe one given tube is going to be the best tube in each individuals system and or the best for each individuals Sonic preferences.

I quess we all are lucky that there is so many choices or maybe not depending on how you look at it.

Kenny.
Kenny,
Yes, there are definitely good choices available for the 300b tube. Disadvantage compared with many other output tubes is that the 300b can get pretty expensive. When I was using KT 88, 6550 and el 34 tubes with former amplifiers they were much less expensive.

This is a trade off I willingly and happily made with zero regrets. IMHO the DHT type of tube are generally more organic and just sound better . Again strictly my personal listening experience.
Charles