i just scored a matched quad of Mullard El84s to put in my AC30..
i've heard good things.. so i'm admitting that i probably bought these on impulse.. $80 for 4 ain't too much of a gamble anyway.. i see them on tubedepot for $80 EACH!
oh well, hope this doesnt blow up in my face (literally!!!) an AC30 takes eons to re-valve