Is there anyone who came back from tubes to SS?

Nope! I use both Audio Research & VTL amps & pre-amps. Only thing is, you do want to turn them off when not using so as to not use up the tubes prematurely. To me SS is best in a 2nd or 3rd system where convenience is more of a factor....if you want to leave it on a lot for background music, or video perhaps. What kind of preamp are you using?

I use both a solid state and tube preamp. I prefer the sound of tubes.

Tube gear can be microphonic and more sensitive to vibration but I just (now) did a test on my ARC LS16 tube preamp and CJ Premier 11a tube amp.

I switched the preamp to an input that didn't have a source component connected to it, turned the volume control almost completely open 3 O'clock position. I then tapped my knuckles around the LS16 tube preamp then on each side of the Premier 11a tube amp and the top of the amp near the tubes.

No "boiiing" sounds or other indications of microphonics AT ALL. No sounds coming from the speakers, i.e. can't hear the sound of my knuckles tapping on the gear thru the speakers.

I listen to a lot of live music; and no matter what I've tried; or whenever I listen to another persons all tube system; it never sounds right to me. I've had CJ, Sonic Frontiers, and Blue Circle. I guess I could live with a tube pre, SS amp combo, but currently happy with all SS.

when i went to my local high end shop they use to kid me that i could detect something in the krell force. i had a krell 300 s krc3 md 20 and studio. i had used tubes before with great results. but after reading high end magazines. ss is as good as tubes. well i spoke with krell this was confermed . i still like ss but tubes take me to the real thing. if you ever hear good tubes and listen to your ear not a magizine you will never go back. sounds like bob needs to hear my system.