You do realise that spending more money on HDMI cables because of it carrying the signal better is no different to spending more money on SATA cables because the video will lose less quality going along the cables.
I made a similar analogy to a mate of mine.
He was DETERMINED that he was going to go out that day, and buy a £100 HDMI cable to make the best of his bluray and TV.
I was nearly crying!
Begging him not to do it.
It's not my money, but hell fire, WASTE!
He has a USB2 HDD that he has media files on.
I plugged it into my PC, and played the files over usb.
I asked him what he thought of the Pic Quality.
He said fine.
I copied it to an internal HDD.
What do you think of the Pic Quality?
Fine!
I then said, you're using a cheap ass usb cable, yet the pic quality is fine.
I then asked, if he thought he'd get a better PQ if he went out and bought the same length USB cable, but spent £100 on it.
No.
Ahhh, success, basically same thing with HDMI.
He bought one for a fiver, and has been happy since!
On the other hand, I must look into the longer length ones soon.
I read with interest the £30 40m cable.
I did assume signal dropout would occur at such a length?
In a similar way that I have a 5m USB extension lead, which is active.
I really want to upgrade my projector to a 1080p one next year, so I can watch bluray on the BIG screen again, as the 40" 40w2000 is great, but I'm used to watching DVDs on a 108" screen. So was thinking I'd need a 10m HDMI cable for that, which would be a tad expensive.
If a 40m one can be had for £30 though, I've no need to worry too much
V1N.
EDIT: The problem is, of course, people are use to, and have got it in their heads, that because with their analogue component, or even RGB Scart connections, if you don't get decent quality, shielded cables, then your PQ drops off, and is susceptible to interference. HDMI is of course digital. 1s and 0s. So long as the 1s and 0s can get through, it makes no difference what price the cable is, the quality will be identical. A £5 cable will look identical to a £100 cable.