Hello @jrdavisphd ! Great question. Having one unit run Core (Server) and be Streamer saves one box and some cables. I own the Grimm MU1 and l love it. It pairs beautifully with my Tambaqui DAC. It eliminated my less than stable Nucleus +, power supply, and power cable. And works better. It also served to my Auralic Aries streamer in my main system.
But you have not listed the best one! (to me) I replaced my Aries with the Pink Faun Scion. Expensive at 20k but it sounds so good! It runs roon core for me now and USB into my main DAC. My Grimm is still upstairs with the Tambaqui, but no longer running Roon Core. The Scion is just better sounding. It is dedicated to Roon only; no native software. I got it in on trial, but was happy to keep it once it settled in.

