Another good place to check is http://www.BlueJeansCables.com

I really like the Canare RCA connectors that they use for their RCA audio and video cables. Industrial strength stuff that makes a very solid connection to the terminal but isn't ridiculous to pull off like some of the MIT or Monster stuff can be.

I've had good results with their S-Video, speaker and digital coax cables.

Their prices are very reasonable, they offer 30 day trial and all cables are handcut and terminated to your specific length requirements.

They also offer balanced interconnects if you want to go that route. If you are at all worried about ground-loop hum or other noise introduced from crosstalk between interconnects, powercables and other sources, and you have balanced connectors on your amps and preamp, then go ahead and use balanced interconnects...otherwise use unbalanced.

For further reference, I currently use an unbalanced interconnect bundle from Monstercable to go from the preamp to the amp and have ZERO problems with noise.