I ride Alpha X's and my brother has Aldentes which I've rode. I've rode mine all year no problems with durability. The aldentes have also been solid in terms of durability, Armada knows how to make a solid ski. In terms of performance, they are pretty different. The aldentes are a lot softer, and while you can butter the Alphas fairly easily due to the rocker, the aldentes are even easier. Being softer, they are a little less forgiving on big jumps, but as long as your not landing backseat they are fine. I prefer the Alpha X's because I like the stiffness, but I don't think you can go wrong with either ski. I would recommend not getting the halos because they are cheaper, and everybody I know with Halos/alpha 2s has had them delam at the tip fairly quickly.