I recently picked up a pre-owned Antipodes EX for £2,000 (new they were £4,500) and very happy - it cleans noise on the incoming ethernet and outputs via USB or ethernet but can be expanded.
It's quite a versatile unit which can be used in lots of different ways - streamer/roon end point/roon server and even as a DAC but the latter probably not best.
I added a "P2" which expands the outputs from ethernet and USB to include I2s coax / aes etc.