The company page in Amazon https://www.amazon.co.uk/sp?_encoding=UTF8&asin=&isAmazonFulfilled=1&isCBA=&marketplaceID=A1F83G8C2ARO7P&orderID=&seller=AX41VWIVMLJ8L&tab=&vasStoreID= says "postta is committed to providing each customer with the highest standard of customer service.".
So the expectations of the results of asking it to them via the "ask a question" button on that page are quite high. If they don't answer or can't explain why one is better than the other, consider not buying any of the two.
I'm just confused about how these both are from the same company but the the cheaper blue one is double shielded however the slightly more expensive black one is only single shielded. I know both won't be much of a difference but just wanted to know which would be better?
https://www.amazon.co.uk/Postta-Gigabit-Network-Ethernet-Shielded-Black/dp/B076FTSXX1/ref=sr_1_1_sspa?s=computers&ie=UTF8&qid=1526031492&sr=1-1-spons&keywords=ethernet+cable&psc=1
https://www.amazon.co.uk/Postta-Gigabit-Network-Ethernet-Shielded-Blue/dp/B076FW3GB1/ref=sr_1_2_sspa?s=computers&ie=UTF8&qid=1526031492&sr=1-2-spons&keywords=ethernet+cable&psc=1

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