Do you have a favorite vacuum tube?

@2psyop (and anyone else interested in tubes), if you haven’t seen them already, watch the You Tube videos of Roger Modjeski’s talks at the Burning Amp Festival (from a number of different recent years), in which he goes into detail about tube design, construction, operation, etc. Roger has an enormous depth of tube knowledge, and dispels misconceptions and myths about them.

For my 12au7 utilizing preamp, my faves are Amperex 7316 PQ's, and for a more literal sound, Telefunken red tips....

I have some Amperex 7316s in my preamp now.  I had been away for a while and I had forgotten they were in there until this thread made me go check, but I have been thinking that my system is sounding good, so I have to agree with thecarpathian about the 7316s.

Had a C J Premier 11 amp with Sevtlanta 6550's.  I loved watching the blue violet plasma swirl around at night time.  It was surreal.  I'm

The Amperex 7316 is one of the best 12AU7s out there.
6SN7s are better than that though. 12AU7s, 6CG7s (also excellent) and 12BH7s are all based on 6SN7s (the 6CG7 and 12BH7 are literally 6SN7s in a miniature envelope; the 12AU7 is the same geometry but half-height), but for some reason the 6SN7 brings home the bacon the way the others don't.