Although I've never heard Cardas speaker cables I would consider them based on reputation. I own a pair of Golden Cross interconnects and they are very warm.
I also own a biwired pair of Analysis Plus Oval 9, and yes they are very warm too. They have the added bonus of sounding much fuller than most silver cables.
I also own a biwired pair of Analysis Plus Oval 9, and yes they are very warm too. They have the added bonus of sounding much fuller than most silver cables.