What are you guys using for power tubes in your C+'s? I like the Svetlana 6L6's and the Groove Tubes 6L6GE's. The Sylvania's are hard to find. I have a quad in one of my Mk I's and they sound excellent.
I'm still searching too. I've had some MB recommended STR440's in one and I think it sounds excellent. In another I have some STR415's and 442's (?) and those are great too. But they are scarce.
And when you do find them, get ready to pay. Sometimes you can find a deal but it is the supply and demand syndrome. Oh well, good tone is worth it and they last a long time.
