To ensure I get the best sound quality, clean and one time investment....VDH is the best option. It may be expensive but its worth it. Before that, I've used Monster cables, Supra and etc...and never knew VDH was such a good cables until I try a 2nd hand VDH CS122 on my car speakers. Sound was accurate, clear and better resolution. That was the starting point that I decided to dump all the lousy cable and switch to VDH.
VDH The Second is my latest rca cable. Only 1 meter as I need to connect from my Audio Control to my amplifier. The old Supra Dual was just so so. Played Jack Johnson cd's...its sounds so good. I cant hear much details while using Supra Dual and having The Second was very rewarding.

You can check their website
http://www.vandenhul.com/. VDH cable are sold in many home hifi shops..yes..I repeat..home hifi.. not at car accessory shops.