If your paranoid that your missing out on something, I suggest trying some CAT-5. There are many recipes out there for this sort of wire (typically using a braided configuration, like Kimber).
It's pretty cheap by the foot and so if you don't like what you make, just throw it out.
If your a computer geek, you may already be blessed with an ample supply of this cable. BTW - if you do try it, I would recommend use of the solid conductor variety, not the stranded sort.
Be very careful about spending serious money on speaker cable! The degree of back and forth argument among 'experts' is rather telling.
