I usually buy Monoprices "Premium" low cost cables.
Not sure how much, if any, the premium cables are better the regular cables, but it's the most I'm will to spend on cables.
Nice part is if you can buy a bunch for low cost cables (or other small stuff) and the shipping price stays the same.
I'll buy 5 to 10 cables and/or small items at a time, ships cost can work out to $1 or even 50 cents per piece.
Monoprice is the best place to buy speaker wire and other cables at a good price.