Thanks! It wasn't fear of them breaking on me, just of their going "dead" meaning dead as a doornail, as some descriptions seem to imply. So I can expect a couple months' brightness out of them, good to know.Well, based on the alloy they are using (the monel) they seem built like a tank, so I can't imagine them breaking or faulting in any way mechanical. They mellowed a little bit during the few months I had them installed, but nowhere near as much as other flats mellow, sound-wise. They are bright for sure. I'm guessing that's why Steve Harris plays them (or his own signature set of them).