That's what I did. 6' USB & 20' RCA Coax (Blue Jean's Cable Belden 1694A with Canare RCA's).
BJ Cables look like the best affordable solution. Did you notice any change in the sound, imaging, or soundstage after the switch? Even with 30' of USB cable my HagUSB stays locked on all the time. But I am always looking for better sound.
wgh
It was a completely different setup - from a Stereo-link USB DAC to the Hag USB into a Slimdevices Transporter, so I can't really compare. I think my problem may have been linked to the fact that I use Standby a lot when I am not using my computer. Needless to say, the second setup is far superior, though the Stereo-link is amazing for the price.
On the Blue Jeans Cables - I have replaced all my Digital, Video and RF Cables with them, including some quite expensive ones, and I am very happy.