I suppose the MF200 would sort of qualify. I'm a fan of c-j ss. I ran an MF 80 with CS 2's (Thiel's easiest load) when I had a smaller room years ago. The c-j's don't quite double down the same way, and the bass isn't quite as tight. A small bit of c-j warmth coloration seeps through, but that isn't exactly unwelcome with these older Thiels. The c-j ss amps match very nicely with most tube pres as well. C-j's own ss pres are quite nice too. BTW, I found the Goertz Alpha-Core MI series cables to work beautifully with c-j and Thiel.
I keep an eye on Class D, though I haven't heard all the latest. Conceptually I love the idea, and while there are differences amongst them, I find the treble curious on all of them. Is it because I'm not used to such a clean presentation, or are they lacking in harmonic extension? I'm not really sure. What little there is of published measurements are not especially encouraging. I hope I can look forward to your sharing your impressions of them, especially with the 3.5's!