HDMI is digital. It works or it doesn't. There will be absolutely zero difference between a $5 monoprice cable and $2000 audioquest. Its all snakeoil marketing for the mon$ter cables, etc.
Boosted, I'm not picking on you personally, you were just the latest with digital works or it doesnt.
Without getting in to inexpensive vs. brand (hint I don't use brand name cables) there's this myth constantly perpetuated that digital either works or it doesn't. Not true.
The satellite signal is digital, yet it has dropouts and errors. Same is true of OTA. The same is true of an ethernet cable, a computer and its memory or a bluray disk. One of the keys is building a robust delivery system which can detect and correct minor errors.
With HDMI, to properly pass it has to create a correct cats eye pattern on the test signal. Expensive and cheap cables pass. Expensive and cheap cables fail. Theres far more than just this one pattern too. Its just the one I've played with.
One such item not often discussed is what are referred to as "sparklies". These are bit errors in red, green or blue and they appear randomly on the screen. This effect is exacerbated when you start working with front protection systems. These tend to start in the 8' (96") diagonal range.
I ran into significant issues with sparklies on the run from my equipment room to the projector which is 45'. The only solution I could get that removed them was an hdmi/cat 5 balun that split out the signal channels and the ddc across separate cables. That adapter wasnt cheap and I had worked with both expensive and budget cables prior to this.
HDMI has very high bandwidth requirements - full hd @ 60p is in excess of 5 gbits/second. As we add in 3d the bandwidth requirements get higher.
Cable construction matters, but it does not have to be expensive. Over short runs, poor quality might not matter as much, over long runs it could haunt you. Now "quality" above does not necessarily mean big $. It means paying attention to wire gauges based on length of the run, acceptable attenuation, and correct termination at the connector ends.
Generally, short runs aren't as finicky as long runs.
Back to our previous discussion now.
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