For me the fact that SS amp manufacturers often quote a "tube like" quality says it all. My listening rig (amp and preamp anyway) and my guitar amps are all tube. Great sounding SS amps are abundant of course and I use mega powerful SS stuff for live shows, but tubes got that mojo I crave. I and many other guitar players tried various SS amps when they appeared in the 70s (the Roland JC 120 was and still is popular), but meh...tubes mo bettah...
