I have bought 3 off of eeebay over the past year and a half for each TV in my house, all are 6ft long and have the carbonfibre cords which seem to be very sturdy. I'm not to big in to this technology since I just started gaming about a year ago but from the one my dad had bought at Best Buy compared to the one I now use on his TV, there is no difference at all.
The only difference is that he paid $89.99 for his cord and I only paid $4.99 on eeebay. Took a few days to ship but in the end it was well worth it!
E/ If you have any questions about it I might be able to help you out if interested!
This post was edited by DarkEvangelism on Jun 18 2011 01:09pm