I've never heard anything about quality issues with the Sovereign, other than some initial early models (I think the XS) not having shielding in them from the factory. The Sovereign is built like a tank, and I'd dare say has less quality issues from what I see than the Excal. Really the Excal isn't that bad. You've just got to remember that the Excal is probably the most commonly used detector out there (at least by serious water hunters, which also means they hunt with them more and are more active in the forums), and so one would expect to see more problems on the forums with them than any other machine. More of them, more used, and used more often by those who are serious about water hunting. There may be some quality issues with some of them, but remember what the machine is being used for. Careful pre-inspective maintenance of the machine might have warded off some of the problems you hear about. I know if I handed offered to give my friend's Excal a look over I bet that machine would have died this summer. Split coil (used with no coil cover), sand in the rubber gasket, one or two of the wire nuts were very loose, etc. That being said, there does seem to be some factory issue with some failures. But again, I've never heard of that said about the Sovereign in any way, shape, or form.