What rca cable adapters do I buy?

I want to upgrade the cables once I get my swan m50w 2.1. I want thx certified monster cables. It says the 2.1 system comes with a stereo RCA-to-RCA cable and a 3.5mm phone plug to rca adapter. I want to replace both of those cables with high quality rca cables with low pink noise and harmonic distortion which is produced when the signal is sent. What are the highest quality cables I should buy?