As a guitar player, all I can say on the subject is there was a disdain for SS amps. However, that is changing fast. I tend to play my Fender Mustang modeler more than my Mesa Boogie. Many bands are using straight to mixer preamp/effect processors on the road. Or a hybrid setup with a small cab behind them to make it sound right when you're on the stage. T
Point being, if tube amps sounded better, they would make a SS amp mimic one. The technology is there. The question would be which one? Unlike SS which I believe are virtually indistinguishable, tube amps and tubes aren't. I've noticed clear differences in sound changing tubes on my guitar amps. I've gone as far as changing tubes until I find the one I like best. Maybe one day they'll add a tube amp effect to AVRs sound mode; jazz, hall, acoustic, tube