I borrowed several USB cables from The Cable Company last year. I needed to connect my Mac mini to a newly purchased PS Audio MKII DAC.
My clear favorite was the Kimber Cable KS CU, which I thought sounded the most natural and dynamic in my system. I preferred it to the more costly KS HB & the KS AG models — all copper just worked better for me, despite my prior preference for silver in the coax connecting my cd transport.
I also listened to Shunyata Theta & Alpha-X, Cardas Clear, Synergistic Research Atmo. SX Ref, Wireworld Platinum Starlight 8 2.0 & Audience Studio Two.
Best of luck finding a good match for your system.

