Wow, I'm going to respond to a 7 year old thread...
Hopefully, the OP has come to his own conclusions about cables by now.
Here's my $.02: Cables make the least difference in sound of any component change or upgrade. I think speakers offer (obviously) the greatest difference in sound.
But the MOST important components of any audio rig is the room itself. A million dollar system in a crap room will sound like, well, crap. A thousand dollar rig in a good room with proper acoustic treatment will sound like a million bucks.