HDMI CABLE HELP cheap or expensive?

I know there are some people who will try and sell you a way overpriced HDMI cable. When I got my TV at best buy, the salesman wanted me to buy a $90 cable, which I thought a bit much for cables. I got my 6ft, 1.3 gold plated for $13 at http://www.optimization-world.com I haven't noticed any quality difference compared to my buddies tv(he uses Monster cable) Unless the two are side by side, and even then you have to strain to find a difference, I say save your money and go with the inexpensive cables.