A post of mine from the EVH owners thread: Since then, I've taken to only running one cab at a time because I feel like there's better punch and body when the amp is only driving one cab. Maybe it's all in my head though Anyway, the Tung Sol in V1 and JJ's in the rest of the preamp is what I'm still running and I like it a lot, though I'm still open to trying other tubes in that position (EHX perhaps?) I'm also still running the Mesa 6l6 pair in the power section. I'm thinking of ordering a matched pair of Sovtek 6l6WXT+ next time I need to swap out the power tubes. From what I've read, Mesa 6l6's are rebranded Sovtek 6l6WXT tubes, and both the extra output/headroom and *advertised* better tone of the + version sound appealing. Has anyone used the 6l6WXT+ in a 5153, 6505, or similar amp for a comparison?