Vintage SS amplifiers sound like, well vintage amps. Various vintage SS amps produce a state of being clear to somewhat muddy sounding. But I have not heard a SS amplifier that can compete with the open, fast & clear plus realistic soundstage of a tube amplifier. I am listening to a Yamaha CR220 Natural sound receiver right now. It is clear, but the soundstage is closed in compared to a tube amplifier. The soundstage extends far beyond the speakers width. The Yamaha CR-220 sounds like reproduced music vs a live performance from tube gear.
I have not heard new Class D, but understand the new Class D amps can compete for the most part with tube amplifiers.