Thet depends on your equipment. The Cardas is a warmer cord, the NBS is extremely revealing (on the bright side). If your equipment is good enough the NBS might be great, otherwise I'd go with the Cardas.
Jademo: Which NBS cable are you characterizing as "bright?" The NBSs, in genral, are far from being "bright." In fact, NBS cables, can be termed as being "very musical." I beleive, strongly, that the better NBS cables are among the best on the market.
It has been my experience with a few NBS cables I have tried that it has a very quiet, laid back sound profile with a lack of brigtness but can also be some what undynamic. At least with tubes this has been my findings. I suppose each system can respond differently though.
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