Kudos on your discovery! You said it well, "quality cables are simply enriching to the system."
I suggest you look into aftermarket power cords, digital link i.e. USB, etc. for they, too, are as impressive in enriching the system as any others. If any of your equipment takes an outboard power supply such as wall wart, you will want to look into a dedicated, regulated power supply�. Yup, those also are enriching... and, of course, an aftermarket power cord on it as well. :)