I’ve owned a few Class D amps from reputable makers and they’ve ranged from awful to ok, with one exception (I’ll get to that in a minute).
By far, the amps I’ve preferred from what I’ve owned and heard at shows or home sessions have been Class A. The amp that by far gave the sound I’ve enjoyed the most was a Boulder. Big, heavy, expensive, and sublime.
Of the class D I’ve heard, probably the only one I liked until recently was the AGD gan fet, at FL audio expo a few years ago. I almost bought it.
Somewhat ironically, the amp I have now and likely for a while is class D, the axxess forte. It sounds great, and is a set of compromises I can live with for now. Audio group Denmark claims their class d is of their own engineering so that could be why I don’t dislike it as I have previous class d amps. Do I like it as much as my Boulder or Ayre mono blocks? Not even close. I suspect a not-small part of that is that it’s an all-in-one system; I’ve heard audio group denmarks separate amp based on “their” class d at the Expo and it sounded great. Of course that was with $60k speakers.
Far as measurements, I don’t give a shit. I’ve been at this long enough and heard enough systems in enough contexts over 40+ years to know what I like.
Disclaimer - for those about to attack me for not saying “to me!” over and over, get over it. Of course the things we say are by default “to me” and it’s usually pretty clear when people are trying to make universal statements, and easily ignored.