dac USB cable

Hello, I just bought a new dac (Wadia 121) and need a good USB cable from dac to computer. I searched the forum here but there is little on the subject. Can anybody recommend a good USB cable? I read up on the HiDiamond interconnects and have sent them an email asking about USB cables, hope to hear from them soon. Anyway, I am willing to spend up to $300. Thanks, Sandra