Update to my setup.
I now use a Bakoon AMP-51R and with this amp in the chain brought the synergy. At this point, with horns or even to venture to other high efficiency/types of speakers, I have no desire to run any other high power SS, tube or other new-kid-on-the-block amp.
Enleum is the new company now so I am excited to see what else is coming from them. In no way affiliated with these any of the brands mentioned in this entire thread. Just found something I like. And to reiterate, these Fleetwood Deville have been delightful to play with in this journey.