This is a silly thread. First, if you hit rocks, the outcome is a probability statement. Sometimes the hit will occur in a location, or at an angle, that minimizes visible damage. Another time it'll get a different location, different combo of vectors, and you'll bust an edge. Sometimes you're lucky, sometimes you're not. It is NOT about bad design, or one company being markedly superior to another in ski durability. It's about chance, design targets of specific models, and the terrain you choose to ski. It's simplistic to say, "I've hit rocks before on other skis, no blown edges, so this time it must be the ski."
Am I saying all skis are equally durable? Obviously not. Thicker edges, for instance, reduce (not eliminate; because you cannot control all the other variables) the likelihood of a particular set of forces buckling out the side. They also add weight and change flex. Harder bases resist dings and dents better, but they also suck at taking wax and are tough to pattern. DPS for instance used to use super hard bases. Very durable. People hated them. Note that the highest performance skis in the world have very thin edges and comparatively soft bases. Skis built for constant impacts will not come in at the weight or ease of skis built for swiveling through bumped out trees. Pick your poison. But keep in mind that it still takes the event, the chance you will hit a rock just so. You cannot control that unless you decide to never ski except on perfect groomers. And even then I bet you'll find loose pebbles here and there.
Sometimes our luck runs out and we make bad s**t happen. Our responsibility. Take a deep breath and move on, instead of blaming.
Edited by beyond - 3/20/17 at 7:13pm