Doug,
Here is my system:
http://cgi.audioasylum.com/systems/9214.html
There is no certain brand of cables that work best with a given piece of equipment, only cables that work well in a given SYSTEM. However, there are certainly cables that DO NOT work well with certain equipment or in certain systems.
I have always found the Cardas cables to be veiled and lifeless in top-flight systems. Ayre is very big on Cardas and I just don't get it, having been very dissapointed in the sound in their rooms at RMAF two years in a row. I know how the Ayre equipment sounds in my system and feel that the Cardas/Ayre cabling they use in their demos does their equipment absolutely no favors.
I also believe that it is ultimately best to stick with one manufacturer when cabling your system (with certain specific exceptions). Mixing cabling from different manufacturers may work to offset negatives of other products in an unbalanced system, but change one component or cable and the whole house of cards comes falling down.
Until you get more focused on the sound characteristics you are looking for in tuning your system with cabling, definitely don't buy any cables without a return policy and make sure to do enough due diligence to have narrowed it down to a couple of contenders and have their products on hand during the trial period.
Good luck.