Don't forget the 861v4. Legacy unit that can include a Sooloos ID40 card and can be upgraded with an LPS.

Can be had for reasonably keen prices these days.

Sooloos, Roon, G series (with LPS upgrade), 800 series (with LPS upgrade), HD621, AC200, Prime and PS, DSPs old and new.

Purdeys, Moke, Leica, 'Blad. Only the best.