Charles: FWIW, I recall my encounters with ss in analytical terms--"the Class'e seemed more solid, but the McCormack seemed faster," but I recall my encounters with tubes warmly as cherished experiences, and I don't compare one tube experience to another. This makes me think the tube experience was profoundly musical, free of checklists and ratings. This is only realized as I look back over the experiences. Perhaps distance is required to see the pattern, and I have little confidence I could discern this difference in the moment.