For my first ever post I'm getting in to the hornets' nest of USB cables. I've a decent set-up, at home at least, using a Centrance DacPort with Grado 325is at home, and with BeyerDynamics (I really doubt these, used SoundMagic PL30 before and think they're probably better). The source is a PC playing FLAC/APE files via ASIO. The USB cable I use is the WireWorld Ultraviolet. Now to the big question! Would there be any benefit in upgrading to the WireWorld Starlight? I am looking for a meaningful upgrade awating a US trip to get the new Grado PS500's (uncomprehesibly large difference in price between the US and Europe, as always...). I haven't seen anything that would be a portable challenge for the DacPort so that stays in the setup for now. So what do you think about USB cable upgrade?