HDMI uses an encoding method TMDS which is supposed to minimize or decrease the possibility of errors but decrease is not eliminating. TMDS sends an inverse signal which the difference of the two signals are compared when received. Any time something has to compensate there's always a chance of error. I don't see why any one would pay hundreds or thousands of dollars for a TV and source without at least doing a comparison of cables for themselves. It's foolish especially when almost every retailer allows a 30 day return and if your lucky enough to have a high end shop they should have loaners on hand to try.