I'm not really one for coming on here shouting about good service and what not, but I must say I was rather impressed with service from Power Cordz lately...
I tried some of their cables a couple of years ago, and was a bit disappointed by them, in fact I said so on here when someone asked about them!
On the back of that, and it was a couple of years ago, Matt from Power Cordz emailed me to find out why I was disappointed with the product. He said they'd addressed the issues, and would I be interested in a totally new set FOC, and one of their liners to use with I-link housing.
Always happy to give a company another chance, particularly as I liked the theory of the product, so I accepted. Cables have turned up, have indeed addressed the issues I had (namely that the coating wasn't strong enough and would pull off by hand, exposing the fibres), very pleased indeed and a company who's products I'd not have bothered with are now very much back on my 'buy' list, so everyone's happy.
So if you're after some stupidly light cables I can definitely recommend Power Cordz! They feel really nice at the shifter too, noticeably smoother than XTR/other teflon coated jobbies as they've got a totally smooth coating. If you tried some of the older ones they're worth a punt now, they definitely seem tougher!