Tried to make the switch from 120’s to 88’s in my Atlas Magnum III to save some money, but it was so much better with the 120’s in my system that I just had to spend whatever it cost. Fortunately, I found a matched quad of Tung Sols for $400 and was given a single replacement to try to get the most out of the 3 I was left with.
The world needs more KT120 tubes. They’re musical and authoritative; truly fantastic and hopefully a future-proof, new classic. Good luck with your hunt.