You mean stuff like the Pete Cornish cables? http://www.petecornish.co.uk/cable1.html
Yes, they're built strong, made to last, but they're 5 times more expensive than anything else on the market and might make a 1% (subjective) improvement on your actual sound, max.
To be fair, I'd pay five times more to get a cable that doesn't die in a few months. I'm sure I'd get more than a 1% improvement over cables that I've soldered back together a few times. On the other hand, £50 is a fair amount of beer. I guess I just don't have what it takes to be an audiophool.