pmboyd, between the personal tastes of audiophiles and your preferences, no one here can direct you to the perfect choice.
As a reviewer, I suggest you not only consider digital cables, but the companies that most impress you in terms of cabling. I have found that companies I enjoy speaker, power, etc. cabling also make favorable digital-related cables. Cable companies tend toward their house sound, and try to get their cables to have similar characteristics. So, if you like a particular company's power cords, speaker cables, etc. the odds are good you would be pleased by the USB.
Failing that, a company with wide recognition for quality build and good to superior sound is Audioquest, with many models and price points. I vouch for there being discernible differences between models.
I now use regularly Clarity Cable's Supernatural USB, which would be outside of your price category. However, the previous Natural USB may work for you.
