I have a coat from Arc’teryx which is their warmest (and most expensive) model. It’s spectacular. I’ve survived two winters in Sweden in it. But this year the zipper broke. I have no idea who manufactures their zippers, but it’s not YKK (or not branded as so, at least). Arc’teryx gives a lifetime warranty, but I have to ship it all the way to Canada at my own expense, wait for them to assess the damage, and either get a repair or a replacement many months later. Not only does this really put me off as a customer, but it makes me wonder just what the hell I would do if I were on Everest or something wearing this coat and the zipper just broke like that. How much does it cost a manufacturer to put a better quality zipper on a coat that costs as much as an iPhone???