Norm, as Matt said, today's class D amps can be a far cry from the uninspiring sound of early low end class D devices common during the early part of the last decade.
Mind you, class D has the same potential for magic and horridity as any other class of operation... It all depends on underlying active and passive componentry, sophistication of circuit design, execution, quality control, and musical/sonic goals and phylosophy of the designer/engineer.
Like with any other class of operation, some companies and designers have been more successful than other companies, and within the same company, some devices have been more successful than other ones in delivering audio nirvana at their respective price points. And some outliers still seem bent to producing an acrid sound... But isn't that true of the industry in general?!
It's worth being experimentalists and shed preconceived notions... Unavoidably, some amps we will love, and some we will hate... The important thing is to listen with our ears, and suspend judgement until we can apply our musical evaluation in situ, on a case by case basis, while avoiding the pitfalls of apriori induction logic.
Admittedly, there is one thing that a big honking class D amp might have problems achieving.... That is to turn your music room into an oven.
G.