Well, I had pretty much written off the Uberschall after demo'ing them in the past and I much preferred the 101b at the time. The way the Twin Jet's low end holds together is a thing of beauty. There was definitely some break in time on the KT88's, but I don't find them sterile...add to that, the controls take awhile to wrap your head around. The power amp controls are nice to have once you have the master volume up and there's a lot of range within the 2 gain channels. If you thought the old Ubers lacked definition and were too saturated, then the TJ would probably be an improvement to your ears. It is more of a player's amp and will make your mistakes apparent. I tend to prefer more open and dynamic tones and prefer the less compressed Ecstasy amps as well FWIW. Hope this helps.