don’t listen to anyone who says that a properly made class D amp has the qualities you seem to seek. A, A/B, D etc. each have a flavor. Although some A/B are biased for a handful of watts at the top.
IME You can't judge any amplifier by its class of operation. For example class D amps vary in sound just as much as tube amps do- some are quite nice, others make you wonder what the fuss is about. The 'flavor' of any amplifier is essentially its distortion characteristics. Some designers know this and others don't.