I don't buy into all the poor durability craze. Sure, there's been a whole bunch of afterbangs that have broken at the hands of their NS owners, but that doesn't tell the whole story.
1. The afterbang has sold HUGE numbers. There are so many out there, that it's obvious a shitload more are going to break in relation to other less popular skis.
2. They were marketed as a tough, durable ski and I know for a fact that some people bash the shit out of them on purpose, just for the sake of it.
3. When some kid posts up pictures of his snapped a-bang tail, you have no idea what he was doing with the ski or if it got caught at an odd angle at the time of the breakage.
They probably aren't as durable as the marketing leads you to believe, but I'm sure they're no worse than a lot of other skis out there.