I bought 10 metres of this cable as I needed to wire in my rear surround speakers. I found the cable to be a lot thinner than I was expecting. However I set the speakers up with the cable and it did the job adequately. There are better cables like QED for example but for the price this one certainly does the trick.
I bought this for 2 rear speakers, instead of 'lighting flex' can't do any sound comparison but the cable was reasonably priced and came in suitable lengths, sound was good on completion.