I told you about the Lorenz C3g
Not many options with the C3g but they all sound good
There are many PY500s all a little different most from Europe but there are some USA made and some Panasonic made in Japan.
I will send you a pair of US made PY500s they sound different but that will be up to you what one sounds best to you.
Thanks Glenn. I have the following on hand:
C3G: Lorenz / Seimens / Telefunken
PY500: Telefunken / Mullard / RCA ... have some more euro tubes but recall exaactly which.