I've owned a few. Never had one break. My 6" Model 971 stood up to a diet of heavy magnum loads, including firing a bag of Georgia Arms "Deerstoppers" over a brief firing session one afternoon on a dare. My current DAO Model 720 has as sweet a DA trigger as I've felt in quite some time, and it is far more solidly built than my Bulldog Pug was, which is a gun that seems to garner endless praise from the semiliterate gunshop commando crowd.
Lows? Fit and finish isn't going to win any beauty awards. Trigger quality out of the box is, with rare exceptions, poor. Bluing is mediocre, and polishing on the stainless ones is a little uneven. Accuracy is adequate, but you're unlikely to wow a Colt, Ruger, or *&* shooter with it.