Thanks for the suggestions, indeed. It is a hard task to choose an amp without auditioning it. But since i decided to try another class D amp, it may take time and more efforts to come to decision. For example, I still have no clear idea yet on the sonic differences between Purifi and GAN based amps, roughly (was not able to audition any of such amps). I will check the other suggested options, but so far, I have no clarity. Would be helpful if you could be more specific on which features of the amp(s) you suggest you like or dislike.
My first class D amp was PS Audio Stellar S300. I was really surprised how one can get that good sound for $1.5k. I enjoyed it, it sound the best on live recordings, i like its compact size, the weight and it works completely cool even does not get warm. It is not an ideal class D amp for me, i think it lacks a bit mid-low frequencies. Exaggerating too mach, it sounds a bit like a megaphone, but it gives quite deep low and clear high frequencies. My next class D selections were still not ideal. The class D amp i am using now is Cherry Megaschino, the one I like the most among ones I had. It is not so traditional class D amp though because of its considerable weight, also it gets quite hot (hotter than my 200 watts integrated class AB McIntosh). But I think Megaschino is a better sounding amp, it somehow sounds more realistic and complete. Although the sound is somewhat clear and natural, compared to mu SET amp, exaggerating again, its reproduction is still a bit "dirty".
As to the speakers, I use 3 pairs of Thiel speakers in different systems, CS6 in the main system with the 5.5. watts SET integrated, the bookshelf MCS1s with a Thiel subwoofer (that I currently use with the Megaschino) and CS3.6s. All of them are excellent speakers, I even never though to replace them.