Western Electric or Takatsuki 300Bs?

@dekay - I'm basing my amps on the Audio Note Kit C-Core Interstage monoblocks, with a lot of embellishments (build thread -  https://forums.stevehoffman.tv/threads/ank-300b-interstage-monoblocks.1112018/#post-27958720). These use cathode bias ("auto bias") on each tube. I suspect that over time, the changes in tube performance will result in one tube handling most of the load. At some point, I may disable one of the tubes to see if I like the sound better, particularly once I finish my new speakers which will be considerably more efficient. 

Why not just buy both sets?  Take the plunge.  You only live once and you are building your own.

I've already spent more on this project than I had planned, and I don't even know if I'll like the sound. If I love it, I may consider that in the future.

Why limit yourself to these two 300B.

I have spent a fair amount of time reading forum posts and reviews of various 300B tubes. There are fans of all the ones you mentioned. But if there is any hope of making a decision, I have to narrow down the choices. The Takasuki and WE tubes had the most consistently positive reviews in what I've read so far, but few posts/reviews mentioned both at the same time. 

One thing I should note is that my current speakers (GR-Research NX-Oticas) are crossed over to servo subs at about 70Hz. The new speakers I'm building (GR-Research Line Forces) will cross over an octave or so higher. So low bass performance is less important. However, I may end up using these amps in a different system so I don't want to completely ignore this range. 

Thanks all for you inputs.

Well, it did come down to Takasuki and Psvane Acme for me. I'm sure I've seen more consistently good reviews of Takasuki vs. the reissued WE

@sns - Agreed, although there have been a couple recent WE reviews that have been quite positive. But I think the main thing that is prompting me to more strongly consider the WE reissues is the five year warranty. Perhaps I shouldn't worry about this if the Takatsukis are generally reliable.

http://v2.stereotimes.com/post/aricaudio-super-300b-set-amplifier-by-terry-london/

https://www.stereophile.com/content/gramophone-dreams-51-feliks-audio-arioso-amplifier-western-electric-300b-tube-page-2

Thanks...

I placed your SH thread on favorites and will give it a read later.

DeKay

@jaytor  I have seen a few instances of Takatsuki failure over the years, not really enough to concern me greatly. Don't recall any instances of WE failure. I do agree warranty of great importance, but this dependent upon how hard tube run in any particular amp. If warranty was major issue, I'd go with WE or EML XLS.  As for warranties, I have heard of issues getting tube manufacturers to honor warranty, claims of amps running excessive plate dissipation.voltages.