Audio Sensibility vs. Signal Cable speaker cable

These are two relatively new audio cable companies. Signal Cable offers a speaker cable called the "Ultra" which has generated some review comments and customer testimonials. Audio Sensibility's Testament speaker cable has only one review in "Stereo Times". Both claim to offer sound quality that is far superior to the much more expensive major brand cables.

Has anyone used, or auditioned either one of these cable brands?? Audio Sensibility's "Testament" cable seems better built and substantial compared to the Signal Cable "Ultra speaker cable, though the latter is much less expensive

However, the question is whether either can provide high-end sound quality worthy of high end speakers