I totally agree with Woochifer. You just need a cable with good insulation and good quality copper/silver and you're set to go. You don't have to pay thousands of $ to get quality sound or better - just different. I would say that room acoustics, speaker placement and source should be your 1st priority. But I'll be honest with you. I would never use a "standard" speaker wire from my local dealer - no matter how good it is for the price. It's a psychological effect.

I use a pair of Kimber 8 TC