It depends on what kind of TV you have and what you are watching. Everything in HD has a specific bandwith that it operates in. If you choose a cable that is to crappy not all the info gets through you get less picture quality than you would through a better cable.
You are going to need a better cable if you have a 120hz 1080p TV that is watching blue-ray than you are if you have a 720p Dynex watching re-runs of I Love Lucy on TVLAND-HD.
All cable and satellite channels broadcast in 720p at the moment also.[/quote]
This is… not correct at all. Have you ever taken a digital signal processing course?
It’s really difficult for a digital signal to be degraded without being completely unwatchable. You’ll either get the same picture quality or no picture at all.
See, the crazy thing about 1’s and 0’s is that when one bit goes bad, it’s impossible to do the decryption, unlike in analog where the picture will just look fuzzy. Therefore, when a cable gets the stamp of approval and is labeled HDMI-compatible, it is guaranteed to not drop packets above a certain threshold.
In conclusion, pretty much all HDMI cables are exactly the same - you can go and buy your 100 dollar cables, while I’ll buy my 8 dollar ones.
You may have a case for delivering a signal through a computer server room which is buzzing with electricity compared to wiring up an apartment. However, there’s no need for a better cable in your example. Sorry!