Two cable companies that sell quality cables at reasonable prices are Alpha Core, and LAT International. You can get copper micro-purl interconnects from Alpha Core for less than $100 per pair. LAT power cords can be had, used, for a little more. You would probably have to spend a lot more to beat these wires. I have both, and I'm not thinking about upgrading. At least not for a while. Good luck.
Sonny
Sonny