@saki70 : the 120s may seem to make the mids thin, but not if you have a preAmp that can compensate for that.
E.g. I have the PrimaLuna Dialogue HP integrated tube amp, and swapped the stock 12AU7s for NOS Brimars and Mullard’s. The Mullards in particular lived up to their rep with midrange beauty with the KT88s.
In fact, it was too much midrange. So I think the Mullards with KT120s would then have better balance in all highs, mids, lows while retaining the glory of each. Just my experience.
E.g. I have the PrimaLuna Dialogue HP integrated tube amp, and swapped the stock 12AU7s for NOS Brimars and Mullard’s. The Mullards in particular lived up to their rep with midrange beauty with the KT88s.
In fact, it was too much midrange. So I think the Mullards with KT120s would then have better balance in all highs, mids, lows while retaining the glory of each. Just my experience.