At Live Vibe Audio (fka Star Sound Technologies) we have use SGC/Sonore gear for years. Our reference system (setup in our Energy Room) has a Signature Rendu SE and sonicTransporter i9. We have experience with much more expensive methods for SSD file transfer and streaming and it does not reach the SGC/Sonore performance level. The differences are complete. There are no weak points and the post-sale service is timely and thorough. The service component is important with this type of equipment as networking and related issues can be confusing if you do not have sufficient experience. Optical is absolutely the way to go. We do use Roon however HQPlayer is installed and used for playback. Will also note the dedicated USB and power cable make a noticeable improvement.
Sonore OpticalRendu
Giving a shout out and recommendation to Small Green Computet and Andrew for the Sonore Optical Rendu. Great resolution and detail. Of course, pairs well with my SonicTramsporter i9 Optical Roon Core Server. They are a mainstay in my rig. What are your experiences?