Hooking up a computer to a DAC is becoming an increasingly popular way to listen to music and there are many purpose built DACs for doing exactly this. There are also a lot DACs being used primarily with CD and for that matter CD players with USB inputs. So connecting a laptop up to the DAC via a USB cable is a simple way to start exploring streaming services like Spotify or Tidal. If you do this then the C-USB is a very good cable to try.
Comparing different USB cables is very like comparing any other audio cables. The differences are very easy to hear. Pick a piece of music you know well, listen to it via a standard USB cable and then with the C-USB in place. Detail will be clearer, voices more natural and critically, music should sound more coherent and easier to listen to.