So what are you guys using for new prod. 6v6's in your deluxe reverbish amps? I need something that can take the abuse of near 420 volts on the plate. I have a few sylvania and rca pairs that work great...but i'm looking for a new production pair I can beat on for practice and save my old stuff for recording/gigs. I'm assuming the JJ will come up alot. Anyone dare try the tung sol RI in these? I love the 5881's, i'd really like to try the 6v6.