@jond, "Heard from Vu in his opinion 6L6 warmer and to him more musical at the expense of a bit of power."
Sounds like we're of the same mind. As folks have mentioned, there's a diversity of opinion. As I like to say, that's why they make vanilla AND chocolate. Like most of us, you never really know until you listen for yourself, and draw your own conclusions.
By the way, as we've discussed previously, you have one of Vu's what I'm sure is phenomenal EL34 amps. I had one of his 45 / 2A3 push-pull amps. In many ways, it was possibly the best amplifier I paired with my Hornings when I had them. I also got my beloved Quad ESL57 from Vu