I think its a mental thing when it comes to cables, mental as in knowing you are getting the very best from your equipment. I always buy QED HDMI-P cables, I was in my local tescos last night and they sell them now. If I had all my equipment linked up with 2.99 cables, I would be feeling I have spent all my money for nothing, although realisticly there would probably be not much difference. Also the quality of the cables may increase the more you pay, but not neccesary visual quality. My friend bought a braided hdmi cable from amazon a while back, it was relatively cheap, and it burst right around the edge where it joins on to the connector, so build quality is a factor in some cases, maybe not all.