Ok nads, I apologise. I admit I am not an expert on hdmi cable specs, and what cable you need for 3d. I have never tried amazon hdmi cables, although I have got a Clas Ohlson hdmi cable which I think was £13.00 odd for 1 metre and its a great cable.
I also feel that whilst some hdmi cables are overpriced and over hyped, cables like the Audioquest Pearl and Forest are reasonably priced, as I am sure some other big brand cables are relatively good value for money.
Also, when it comes to the subject of cheap versus expensive cables, I think its very much personal choice and some people prefer to buy branded cables as opposed to generic non branded cables, however you have to bear in mind that most shops selling expensive hdmi cables will allow you to return the cable if you don't like it (usually within a reasonable period of time and provided the cable is in as new condition), so there is no reason why you couldn't buy a decent cable ie Chord from Richer Sounds for example and a Tesco value range hdmi cable and return the Chord cable if you don't see a difference.