I have had differences. The music was just more clear with the better cable. But I used a cheap cable and then switched to a kimber, never really tried anything else. A good belkin or any cable with adequate gauge and good connectors should be fine. That is just what I think. I wouldn't think silver, copper etc would matter as long as it has good connectors and no packet loss.
Will a quality USB cable make a difference....
Will a higher quality USB cable make a difference when being used between a storage device (bus-powered mobile drive) and a music server (w/o DAC), as opposed to those used between a source (iMac) and USB converter/DAC? Can anyone confirm an audible improvement?