Yea, it's true about the tubes. My Block still has the original Super 6s. They are supposed to last forever. But I am weary about gigging with them now for over 2 years and they still have muster. I will switch them out for WingedCs soon. But if you load both heads with JJs. They sound exactly the same to me.
I tried my XXX with my 1960AX loaded with V30s (because the 5150 blew the factory Greenbacks! ;D). Sounds ok/better. But I am either gonna get some 100watt Celestions for the cab(shame to waste the nicely built, matching cab), or buy either the Randall cab with the 100watters, or 2 100watters and 2 V30s, or the really awesome/to interesting cab with 2 V30s and 1 15incher.
I have toyed with the idea of those Eminence speakers since they are very nicely priced. But there are so many choices and I don't know what I want from them like I do Celestion. Also I thought about refinancing my house :
to buy some EV speakers. Those things are so expensive.