Earlier this year I auditioned multiple units before finally deciding to increase my budget and purchase NAIM's Reference ND555 and now two of the CD555DR power supplies. In the OP's price range, new or used, I was very impressed with the Grimm MU2 and the DCS Bartok Apex. I also thought highly of the Esoteric N01XD. I wanted a DAC/Streamer combo with no volume control. My CJ GAT preamp takes care of that duty.
