I ordered two of these cables along with two of the Ex Pro Gold Professional versions which were over 40% cheaper. When the order arrived, there were 4 of the same cable received. None of them were the Premium dearer version and they all suspiciously resembled an exact match of the cheaper version.
When I complained via feedback, I was told by the shop that the product codes were the same for both products and that the order was therefore correct.
I replied to the email stating that the order was not correct due to not receiving what I had ordered (visually the products look completly different) and asking for the correct cables to be sent to me and I would return the surplus cables only to now be replied to that my original order had in fact been upgraded and that all four of my cables were in fact 30v resistors which were better than I had ordered and that they would be amending the picture and price accordingly on Amazon(neither have changed as at the time of reviewing *EDIT - As at 28/01/10 - over 4 months later and they still have not changed the picture!). Unsurprisingly I cannot see any mention of 30v or 28v in the product description.
If you are going to purchase these cables get the cheapest version. HDMI is HDMI and you will receive simply a cable anyway. Besides saving money, your order might be upgraded as well!