for my personal opinion, cheap or expensive HDMI cable might still have the little different but not huge as compare to analog cable. I do agree the concept of digital that carry 1 and 0 only but when talking about the length/etc criteria, there might have a different. I'm not pro in this but just normal end user thinking.

somehow, HDMI just using similar DVI technology which is consider old de.... what next potential hot connection?
I predict is DisplayPort



at this moment only carry video, not sure got any latest news or not, [pls share if already have any product exist with both]
but there is already have the Optional, 1-8 channels, 16 or 24 bit linear PCM, 48/96/192 kHz sampling rate, uncompressed, max. 6.144 Mbit/s bit rate that on implement anytimes when designer want use to it.