^^ TY Asman.
So...I've been reading, on the unit and tubes; 6SN7s specifically.
I can't tell you, how many times I've seen the same thing: that the EH 6SN7, is a horrible...not bad...
horrible-sounding tube.
I'm pretty new, to NOS; but I
do know...a guy can get taken for a ride. In fact...I think that's why, even though I've had a good number of tube units (mostly pre-amps though, where maybe a 12somethng doesn't make
that big a different); I've steered clear. I mean...I don't understand the getter, and the certain printing and logos; it really is, a fetish property, yes.
It reminds me of this...
https://youtu.be/Bu-A8YfC4w0I've heard the names over the years; can't remember them, and I'm sure they are as du jour as many things.
So...who are the tube mongers, to look to. Right now...my safest bet, based on the little research I've done; are perhaps these
https://www.tubedepot.com/products/rca-6sn7gt-gtb-black-plate