1) I didn't know that you could buy these cables for $299. Personally that is a bit expensive. If I could see a demo which actually showed me the difference, and if the price dropped a bit I might be interested.
2) All the equipment I have in my setup can be seen in my signature. The TV I have downstairs is currently not HDTV ready, which I just learnt. I am looking to buy a new TV in a few months, in which I may be interested in the cables.