Kings are a bit like Marmite, you'll either love them or hate them. It will either keep slipping all the time, or it will hardly do so. I've been running a King since late 2005. First a new one which was quiet and skipped a few times, then in mid 2006 a used one which must be at least 5 years old by now and it hasn't skipped ONCE. On the other hand, I know of many hubs which have been skipping like crazy, which kept braking and had to be sent off to the US for warranty. If you want to buy one, buy it used from someone you know had no problems with it.