Reasonable but not outragious interconnects

Goertz copper micropurl.
Tough to beat for the money.

Virtue Audio Nirvana.
http://store.virtueaudio.com/category-s/32.htm

I re-cabled my whole system with these, IC and speaker, and I'm very happy, for a low cost. (Used to run far more expensive Kimber, I heard no loss in sound quality when I cheaply re-cabled).
Plugs and termination quality are excellent, so is customer service.

I'm Done.

Grannyring on this site makes great interconnects for reasonable price. I purchased a pair from him and they outperformed all other very expensive pairs I’ve had. He will make them with whatever RCA’s you want!  Highly recommend you give him a shout. Just search for him or “Acoustic BBQ” which is his cable brand here on this forum. 

Rick

Another nod to Signal Cable. Frank is awesome to work with, and their cables are a terrific value in regard to performance>price ratio.

http://signalcable.com/

From a purely technical standpoint the two considerations with interconnects are the the connectors and whether or not the cable is shielded. All else is snake oil. The problem with most bundled, non-DIY cables such as some of the ones named above is they usually have OK but not great connectors. If you can at all use a soldering iron then opt for high end connectors and shielded cable such as star quad microphone cable. Finally, have you thought of the most neglected, cheapest tweaks for cables: have you cleaned the connectors and jacks lately? Caig DeOxit is one of an audio hobbyist's best friends.