Hi Liz,
Maybe you had a bad encounter with a tube power amp I don`t know. I can tell in 20 plus years of using various tube amps they are simple and trouble free.
We all accept that the best amp choice depends on your speakers.Liz, in my experience tube amps have been more realistic and life-like then any SS amp I`ve heard in all these years.I understand your experiences are different from mine.
My current amp is the simplest,trouble free,reliable and by far the best sounding I`ve ever owned.IMO SS amps with odd and upper order distortion is more obviously 'colored' and wrong sounding than many tube amps that admittedly will have more even order distortion. YMMV is definitely true.
Regards,