Big E has posted a review of the Supra DAC XLR Gold AES/EBU digital cable (~$100) at Hi-Fi Unlimited. His conclusions:
The Supra has similarly smooth, refined highs, but only more "air" and extension compared to the Wireworld. I couldn't be exactly certain, but perhaps due to the extra extension on the highs, I get the impression of just very slightly better detail retrieval heard through the Supra. It does not have mid range density of the Starlight, by comparison, the Supra being more open sounding. I felt there were however, no notice able difference in the bass area.
You can read the full review here.