I chose the Sonore SSR. It will play files from the NAS, and stream Tidal in all formats including DSD. I'm going to give Charlie a demo in his system very soon. My main criteria was that I wanted computer audio to sound as good, or if possible, better than my transport/DAC combo. This does it. I needed a NAS regardless of approach, but figured I could buy the Sonore or (likely) a couple computers over the next decade to use as dedicated servers. I have little faith in computer durability, and ease of use.
I know Tom P has been receiving some "original" 24 bit files ( not upsampled recordings ) from a friend, and I'm hoping to compare his computer and S/PDIF converter to the NAS/Sonore with quality files this fall when we meet up to test out his SET transistor amp in my system. My DAC has multiple inputs making it pretty easy to directly compare 2 sources. Something I feel I have to do all the time now, since meeting Tom.
I currently have 1 DSD file on the NAS from an SACD rip that sounds great compared to the 16/44 rip of the same album. I haven't downloaded any "original" DSD or "truly" hi rez files yet. In the near future, however.