Though, I do vacillate a bit between my JC-1's, Atma-Sphere M60's, and the SDS-470C. Depending on the speakers I'm using... I think I find... that one, or another may sound a "wee bit better" than the others.
But... think... I may end up settling on the SDS-470C... since... they all sound so similar... and the SDS-470C... is small, low-temperature, and hassle-free. Not to mention - that at it's price it is a "huge bargain!"
The thing is... there is not a big difference in the sound of any of them - so, I really couldn't recommend any one over the others - except in the context I note above. And... I tend to think that's likely true of several of the class d amps and hi-end amps - that there are only very subtle differences in the sound of any of them that one person or another will find make one better than another. But, in reality such subtle differences are not really so significant as to definitively determine that to be true - "Beauty is (only) in the mind of the beholder."