I think we need to define durability. So far with the Coda and the Westmark, they get "ugly" quicker. Still ride-able, still performs the same, they're just ugly after a few days. Chips up top, scratches galore on the bottom. Not regular scratches either, ugly ones you want to shave off. One part of my coda looks like someone took a cheese grater to it. And this was after riding groomers
But once they're ugly, they're ugly and that's that. It didn't get any worse when I went to squaw and alpine and was riding much more varied terrain that at Bear.
Never Summers for example don't degrade that fast.
But if we're talking about durability, as in the board breaking in half or splitting, I don't see much of that. The sintered bases due seem to degrade pretty fast though, requiring maintenance.