Nice choice, I’m jealous. My comments don’t fully apply is I run different gear , but still low power tubes . My favorite 6L6 is the Winged C Svetlana ( not the current ones ) . I have a large collection of power tubes including NOS TUNG Sol 6550 , GEC in KT-66 and KT-88. Winged C in 6550 and 6L6. Many new production tubes including Psvane TII . The Winged C’s have the airy sweetness of the GEC, but with a low end that’s full like a modern TUNG Sol KT-120. I’ve used the Winged C in EL34 as well. On the small driver tubes , and I’ve tried most , the NOS Telefunkens are astounding and worth the price . Since I’m down to looking to purchase a Raven or Quicksilver, I can’t comment as an owner . But talk to the shop and see what they like , and if it’s a huge difference as with some other amps . When I do pull the trigger on one of these two brands to replace my Rogue/Had combo, I will be rolling in the tubes mentioned , as that’s what my preference is . Would you please post or PM me when you do as I’m very interested in your results . Cheers , Mike .