Your Audible Illusions preamp is stellar and definitely worthy of your speakers.
I would go for the Stereo 100 Dark over the DragoN. I really like Rogue’s full tube products but never been impressed by their hybrids.
Personally, I would probably even take a Cronus Dark over your AI preamp paired with a DragoN.
Based on the description of what you’re seeking, the Stereo 100 with your AI preamp would be a great combo.
If you’re set on solid state, the Parasound JC5 is very full and musical. Like other JC designs, its distortion profile is 2nd-order dominant, and therefore, uncommon among solid state and almost tube-like.