Downunder, What don't you like about the 6H30 "sound"? I like to think that circuit design trumps the choice of tubes in creating the sonic character of a piece, but I must admit there are tubes I do not "like" based on my own DIY efforts and listening, e.g., the 12AU7 and often the 6SL7. Yet these are tried and true warhorses, and I am sure they can be made to sound great in the right setting.
