Originally Posted by nik
Wrong. I'm an audio/visual freak, and I can tell you that the high end cables are pretty much worthless. High end speaker cable is actually somewhat worth the price, but generic 12 guage or 14 guage will work fine too. I'm hardcore into my audio and video, and if there really was a substantial improvement, then I would spend the $$ for sure. Back in the old S-Video days, I did get a Monster S-Video cable that was a slight improvement, but even then it was nowhere worth the huge premium in price. As for component and all that other stuff, I'm telling you, you are throwing your money down the drain. Sure for Xbox 360, it has a proprietary plug, so you have to buy the 360 component cables, but for things like DVD players and stuff like that, just use any old cable and plug them into the same colors on both ends.
If you really want to spend money on something rather unnecessary, then I would get a line conditioner. A power conditioner. They can cost huge $$$, but they will help your pictures and sounds much better than any improvement in cables. Of course, you won't see me buying any line conditioner, I would rather put that extra money into acoustical treatments.