The Stubai's have served me well. A friend of mine has had problems with the Camps. The Camps have a flat aluminum piece connecting the front piece with the back piece. When using crampons with flexible soled shoes or boots, this flat piece should flex with your shoe. The Stubai's use a steel piece here which is flexible, the Camp's use an aluminum piece which is brittle. Jim at PMS replaced this center piece on my friends broken Camps with steel pieces, like those which are part of the Stubai's.
I assume though, that the aluminum portions of both these crampons would probably fail in a brittle manner if over stressed. Steel crampons would likely be ductile if over stressed.