I would see what kinda connections each end has and the quality of the cable shielding. That would be where the interference would occur. Sometimes prices does determine the quality but also sometimes your paying just for the name and not the quality of the part itself so I think it pays to dig a little deeper. To see if your paying for quality or just for the brand name....Oh yeah another problem. Is if your equipment isn't of good quality that also affect your display as well so it is all three that makes for a good entertainment system....HDtv must be of good quality and wires of good quality and equipment must be of good if not excellent quality so it takes three things to make a good output for good viewing..