Many Nordost and Cardas wires are often thought of as having intrinsic sonic characters that are in opposite parts of the spectrum, with some audiophiles being of the opinion that Cardas tends in the direction of excessive warmth, and some audiophiles being of the opinion that Nordost tends in the direction of a colder and more clinical sound. Of course, different models within each product line will differ in those and other respects, as Guido noted in the case of the Valhalla and Valhalla II.
My main point in responding, though, is to point out that with the exception of the Cardas Clear and Clear Beyond speaker cables, what the Cardas, Nordost, and Furutech cables Guido mentioned all have in common (including the Cardas Clear interconnect) is very low capacitance (between 8 and 20 pf per foot in all cases). Which would seem to say that if other cables are considered, preference should be given to those having similarly low capacitance.
Unfortunately, though, many and probably most manufacturers do not provide capacitance specs for their cables on their websites (Cardas, Nordost, and Furutech happening to be among a small number of notable exceptions). But in those other cases perhaps an email to the manufacturer would unearth that information.
On the other hand, in the case of the Cardas Clear and Clear Beyond speaker cables (but not the Clear interconnect), capacitance is very high (278 and 446 pf/foot respectively). Presumably that is a consequence of those cables having been designed to provide extremely low inductance. The impedance of the Sabrina speaker rises to relatively high values (around 10 ohms or so) in the upper treble region, which is where inductance primarily matters, and that kind of impedance characteristic makes having low cable inductance relatively unimportant. So my instinct would be to avoid those particular speaker cables in this case.
BTW, here is a link to a very nicely written review of the Furutech cables which Guido did a while back:
http://www.positive-feedback.com/Issue45/furutech.htm
Best regards,
-- Al