What? No.
Over longer distances the signal can deteriorate, and not work. A better quality wire can continue providing a stronger signal, and therefore work over longer distances. However for shorter distances (<5m or so), even the cheapest wires will be good enough to provide a perfect signal. A wire simply needs to be "good enough", and it will always be 100% perfect. See the link in my first post above for an illustration of this. Everything above the cliff will work perfectly. Everything below the cliff will not work at all. Using a better quality wire does not improve the signal, however it can extend the cliff, so it works with a weaker signal (ie over longer distances).
tl;dr: Higher quality wires DO provide stronger signals, however, unless the signal is very weak, because it is going through a very long cable, their is absolutely no correlation between signal strength and picture quality.
and...of course you were just spamming for 10 posts. Dick.
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