If the cables are thicker and better-shielded than your current cables, yes, they may be better.
The "gold" aspect is nonsense. Gold is good for jewelry, but useless for a number of things. Gold plating won't make the signal any better or worse, and copper cables can actually perform better in terms of video science. Gold DVDs are another irritant, as the gold content actually makes the discs harder to read -- not easier/better. People flock to gold because it sounds high quality, but it's really not.
