2019 300B tubes that are worth the money?

I've been desiring 300B upgrade for going on year, unable to decide due to observations of costs and benefits for each and every variant. Finally threw the dart and came up with Psvane Acme, thus far so superior to prior Shuguang Black Treasure regret not doing this long ago. I have yet to see negative review of Acme based on sq, only on reliability, same as I see for Takatsuki.

In regard to reliability, durability, tubes may not always be at fault. Some amp manufacturers run tubes at higher plate voltage than these tubes designed for, responsibility for short tube life needs to be placed on amp manufacturers. One should measure or insist on plate voltage specs prior to amp purchase.

I love the sound of my Airtight ATM 300, with Takatsuki 300B, but unfortunately one unit died before completing 1000hs of use! 🤨

@nascimento1958 Not first issue of reliability I've seen with Takatsuki, part of reason I didn't go with them.

Regardless of whether amp or tube at fault, I simply don't understand why so many of these tube manufacturers can't produce robust tubes. It seems like EML and WE have produced robust tubes, so it can be done.

Psvane Acme continue to impress, nearing 90 hours, we'll see as to reliability.

but the midrange is magical with Voxatix speakers

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I just listened to 2 YT uploads on the Vox Pi. Honestly, I dont like the mids in this speaker. Its too forward * loud* in certain fq peaks. See this is why I draw my limit on sens at 95db, not a single db higher.  When a FR driver passes the 95db mark, the speaker gets into trouble with certain cds/fq peaking. This YT video might be yours. I am not sure

I hold the belief the Davidlouis VX8 and VX 6 are the 2 FR speakers to beat. 

can someone tell me why Voxativ has their Pi speaker listed at 90 db sens.. when the Driver is 96db sens