@mahgister +1
putting all tube amps in one basket and comparing it to single basket wit all SS designs is a little bit “incorrect sound equipment design development” representation! :-)
there are plenty of good sounding, warm (meaning linear) SS amps, incl x-fet, v-fet, darlington, class A, G etc on market. typically “warmer” sounding SS amps cost more, because devices used for output stage perform better (less distortion with less fb) at lover current, thus require more of them, matched/selected, in parallel.
warmer sounding tube amp is “easier” to build, if you have high quality matched tubes, expensive transformers, capacitors etc., which cost plenty. tube amps require more often maintenance, tube replacement, bias/bal adj. etc.
for 25 W range amp I prefer tubes, for higher power and low freq. content music I prefer SS (accuphase A, ML).