I have the 10" and 12" version of this pan. They're well put together, and seem at least as substantial (i.e. heavy!) and durable as All-Clad d5. I like the shape of the handles better than All-Clad's.
The fact that they don't sit evenly on a flat surface is a deal-breaker for me, though. Also, they've reinforced my personal opinion that 3-ply is better in terms of performance:weight, even if you completely ignore the cost difference.