I have just bought some component cables to connect my Samsung progressive scan DVD player to a Yamaha AMP and then another set of component cables to go from AMP to Panasonic PW7 plasma. They are currently all connected with good quality s-video cables. The component video cables cost only £10 each and after reading that some people pay upto £90 each set of cables I was wondering whether I will even notice a difference in picture from pretty good s-video to fairly cheap component cables? Will it be worth buying more expensive cables (but not £90 each)? Also, will it be worth buying an advanced high definition component cable pack for my XBOX as it's current connected via the original composite video lead that came with it.