i use mine everyday (well apart from when its broken, which is pretty much all the time) to be honest thogh i think most of it is just a case of being unlucky, for example ordered a full set of samcos a day later blew a hose which in turn blew the head gasket (which i had replaced 3 months ago)

apart from that it has been fine.

p.s. not all late spec saffs have a/c