OK, here's where I'm at so far...
Ruby 12ax7ACZ HG from Valve Queen in V1
NOS RFT from the Tubestore in V3
Sovtek 12ax7LPS matched and balanced from the Tubestore in the PI ( V5 ).
Didn't dig the RFT in V1. It was OK, but it didn't have the gain the Ruby ACZ has. Too polite, for lack of a better description.
Could be that particular RFT. I only have 1, so I'll roll with it the way it is for now. It sounds killer in V3 though.
The rest of the preamp is still the JJ's that were in it when I got it.
Had to stop there 'cause the wife wants to go out for dinner.
Gonna do V2 for the rhythm channel & V4 next, then the power tubes. My amp doesn't have a loop, only 5 pre's.
And I found the quad of =C='s I thought I had...........In the MCII
Def gonna try em in the MTL
More later...