I'm in the same search. I heard Auralic aries G2.1 in two house, is very good, I was AB testing to Oppo Cd player and sounded better, tighter stronger bass with blacker background. Used $2500 I think, or Aries S1 should be good. Another I think is very good Volumio Rivo + ,$1500 I like it and consider buying because of 3 things:
1. Pro's in streaming , they created Rasberry Pi and many happy campers, not this new streamer processor I think is made by Cardas if Im not mistaken.
2. No screen, but have hdmi video , so I can put small tv and see songs maybe even watch video files?
3. 5v power supply, and they sell for $500 better one, but you can get even better one from very good brands and that will change the sound big, because think about Auralic Aries S1, additional power supply extra $1000 and sounds better, sames as Auralic G1 vs G2 most of uprade power supply, Aurender cheaper vs expensive model most in power supply upgrades, streamer card is the same, but those more expensive models they have lower jitter so better DDC which you can get separate if you want to add on, but the streaming processor maybe is the key here. Good luck searching!