My hot rod can nail it if i put in some clean tubes and bias colder then usual. I prefer hot tubes and hot bias though...muhahah - i get great jerry sound below 4 volume though, its still quite loud at that point.
a nice tube to try and get that sound might be the TAD 6L6GC-STR. They are amazing power amp tubes that can get really clean overdriven sounds and really nice clean as well depending on how you bias them. everyone compares them to the old blackplate RCA's. Probably not as good as those glory tubes but up there.
As for preamp tubes ive used a number of brands with small differences - certainly some are better then others but i think power tubes should be #1 priority.
Edit - I should mention that im not as picky about my jer tone as some of these other guys here. I am budget limited though hehe. Some day i will be like these other guys. Just have to climb that career ladder.