Which Class D Amplifier? PS Audio, Ghent, Nord, Merrill or other???

I've heard the Devialet at a show and they sounded good to me. I am sure there are other good class-D amps also.

https://www.devialet.com/en-us/expert-pro-audio-system/

I use the XTZ edge to drive my big Tannoys. Fine dynamic sound a little on the warm side. Low low cost. Good power. Gain control. Small size. No problems. Like an amp should be - let's you concentrate on source and speakers.

Bel Canto. Best kept secret is the REF500M, while not as powerful as the 1000M, they are slightly sweeter with astonishing midrange, clean (but not sharp) high end and slam and drive.

Like I said, I think you can´t go wrong with Nord.
Hulgich Audio, an australian speaker company, won the Best Sound Award in a HiFi Show on 2017 in Australia and second place in 2018, using Nord One Up Mono Amps and competing with system costing hundreds of thousands.
I think for the price is a no brainer.

Lot's of good options. Test them all and get back to us! ;)