Doug s., I guess you never heard a EML XLS 300b tube. They are very dynamic and neutral almost to the point of sounding like SS.
I really like the Takatzuki 300b's. They are very natural, refined, and open. They are not slow and limited in the bass and treble. It's important that you have quality trannies of cause.
Maybe you should try and hear a well made 300b amp, before you believe what others say, IMHO.
Joe