Bricasti M5. Handmade in USA, bulletproof build, flawless performance. Roon ready. Can be had brand new for $2k. No USB needed.
+1; I can recommend the M5 as a Roon streamer. I purchased one and was amazed at the better sound quality I heard from it vs my previous long term streamer a Pi/Digi+ SPDIF output board with a iFi Power Supply. No complaints from me though regarding the latter as for a few hundred dollars that combo sounds good and was bullet proof running Roon for many years.
A big bonus of the M5 vs the USB only streamers is you can try its different output interfaces to see which one works best with your DAC (it may not be USB...). I've also purchased an OpticalRendu to compare its USB output to the M5 USB output and I thought it equaled the sound quality of the OpticalRendu, but found its SPDIF output with my DAC to sound better yet.