I recommend Tara Labs cable.
Based on my experience with them, they're very well built and a solid performer all around. Maybe a little warmer than neutral, but barely. My Master Ref gen II's were about $300 a pair, but I don't think they make 'em anymore. I'd bet the air 3's are about as good. Huge soundstage, smooth presentation, powerful bass....it's a good all around cable.
-->grub