I've never used the Reflex or the QAD.

So I'll keep my comments on the Copper John dead nutz II. It's a real nice sight.. but I do have one complaint. Like all other sights I've used with thin and exposed fiber optics.. they all brake when they get real cold and then are bumped.[:@]

I'd like a manufacturer to find a solution to this problem. Perhaps just not leaving the thin fibers unexposed would just be enough. Other than that.. a great sight.