@kuribo , if you were going to buy now a class D amp, which one(s) would you choose? Or, do you think that much better class D designs may appear in near future, and hence would you rather wait until then?
How are you defining "better"? At this stage, the performance of several class d amps is excellent with distortion beyond the limits of human hearing. In addition to the technical excellence, several of these amps get rave reviews from a broad spectrum of reviewers and end users. I would look into Purifi and Orchard, see the reviews in Audio Express. Both are state of the art design, have extremely low distortion, and have a wide following. Unlike the Peachtree and LSA amps, they are not load dependent and will perform as advertised with any typical speaker load. Check them out.
By the way, I have owned Tripath, Spectron, Hypex (UCD and Ncore class d amps) and Purifi over the years and have followed the tech from these companies and many others over the years. Not that my opinion should matter, but I am familiar with the players and the products.