Don't know about durability yet. I have a Black Swan hybrid one piece that I received earlier this year, it is still practically new. I just don't shoot it. It is very light. Very fast. Pretty in the utilitarian sense. But to me it does have a different "feel" than glass bows. It is something I can't put my finger on, the draw is different than similar bows of the same weight. Anyway, if I remember correctly it was Pete Ward that said in one of his reviews that he found no benefit for carbon in the core, only on the outside of the limb. My bow has front and back and core lam all of carbon. I prefer the smooth drawing characteristics of bamboo. I guess carbon may have a high pre-load. You can't touch it for speed but durability is probably going to have more to do with the experience of the bowyer. Black Swan has been doing carbon forever, you might send Arvid an e-mail he is a wealth of knowledge.