So, limited help here, but I found my "anchor" speakers: Sonus Faber Signums (4 ohms) and tried a Heaven 11 Billie integrated. Tube pre and Class D output. Sounded wonderful... to a point. It just didn't have the muscle to full release the speaker's potential. Note, I'm mostly a low-volume listener.
Counterintuitively, I went with an Audio Research VSi60 (from TMR, great service, FYI). Way less power, but the right kind of power. I'd find it difficult to return to solid state, but I'm sure there are better amps than I've heard, I'm still learning.
The newer Belles and Kinki Studio have gotten rave reviews, and certainly Hegel is worth a mention. But in case you're curious Heaven 11 had just gone through an upgrade to considerably more power.
Best of luck.
https://heaven11audio.com/billie-amp-stereo-intergrated-amplifier/