I have a CX-7, too, and love it. Ayre recommends Cardas cables w/ XLR termination for their products (as they're internally wired w/ Cardas, and they've found them most compatible) or their own interconnects, which are expensive, but excellent- basically, Cardas cable (probably neutral reference design, but I'm not sure) modified by Cardas in manufacture, specifically for Ayre gear. Call Ayre if you have any questions about it- their customer service is excellent, beyond compare, in my opinion.
In any case, in my opinion, go w/ XLR terminations if you can, regardless of cable brand.
In any case, in my opinion, go w/ XLR terminations if you can, regardless of cable brand.