WOW! Talk about polar opposite's, you don't get much more different than Cardas vs. Nordost.
The Cardas will give you a richer, fuller sound, the Nordost a faster, more transparent sound. The downside is the Cardas can sound slow, while the Nordost can sound lean. Not knowing your musical preferences, I would have a hard time recommending one over the other. It's just unusual to see someone considering two such different cables.
Neither is better, just different. You will prefer one over the other, but that doesn't mean it's better, just better in your system, to your ears. That's all that really counts.