Previously I used a Pioneer bluray player as the digital streamer to my Chord QuTest DAC. I did a try with the Digione Signature. I have to tell you it is amazing, really. I'm just sitting and listening music instead of some other stuff I must do today. The rhytmic, timing, bass response is ... my English too poor to describe how good is it.
I have never tried non Signature version, Canaris BNC-BNC coax and bought on Audiophonics a good linear power supply for 89EUR, so I cannot write comparison e.g. how it performs with basic power supply.
I don't think there is better music streamer on the world for a Signature Player + a good power supply price.
One minor negative; it was not really plug and play, I must install squeezebox server plus I use USB stick it means some linux knowledge is necessary to mount that as a permanent device, so it is not for my grandma. (After the setup no maintenance necessary). Easy to control with Android app on phone.