Ditto, KMC chains, although I reuse the Missing Links so often they can be taken apart with just my fingers. I've probably popped 'em apart and reused 'em a dozen or more times each. So far, so good, haven't had a quick link pop open unexpectedly. Only problem with the original Missing Link design was you needed a tool of some kind until the metal wore just a little on the Missing Links. I supposed it could be "tuned" by filing the engagement surfaces just a tiny bit.

I'm sure KMC wouldn't approve but that's the only hitch with the original Missing Links. They aren't "quick links" until they're worn a bit or unless you tote a tool to get 'em apart.