regular USB audio(using the default windows drivers) is a dead end IMHO anyway...major jitter, the need of uber-pricey cables..major deal breakers here! 
get one of those uber-low jitter S/PDIF interface(they're USB, but strangely enough they "work" w/ cheap cables, thanks to proprietary drivers..that prolly include ECC) and you're all set?
but then you'd need a killer RCA cable to go to your amp/dac? still cheaper than a $300 USB cable.
OTOH, more and more new USB audio devices also run their own drivers to get rid of those limitations(asynchronous or whatever it's called)...and S/PDIF is also very much prone to jitter, so you'd also need a high quality amp/DAC.

get one of those uber-low jitter S/PDIF interface(they're USB, but strangely enough they "work" w/ cheap cables, thanks to proprietary drivers..that prolly include ECC) and you're all set?
but then you'd need a killer RCA cable to go to your amp/dac? still cheaper than a $300 USB cable.
OTOH, more and more new USB audio devices also run their own drivers to get rid of those limitations(asynchronous or whatever it's called)...and S/PDIF is also very much prone to jitter, so you'd also need a high quality amp/DAC.
















Proof of happiness... hmm I tried the stock cable of my external dvd burner, bought a 10 dollar usb cable from a computer shop, and got a belkin gold cable... In the end, I stayed with the Belkin and never looked back. I'm not one to spend for a $1000 cable for a cheap dac though so I never went that road





