Good but not the Best
I am a huge fan of black diamond. love the stuff they make. But in my experience the crown goes to Metolious when it comes to haul bags. I have a black diamond haul bag and have used it on several walls in Yosemite. After the secon wall it already had some holes in it. In contrast, my climbing partner ran the metolious bag. His had several more walls and still didnt show as much wear as mine did. Something about the material i guess, just makes the metolious last longer.
Still, I love my BD haulbag - its still tough - just has larger duct tape patches now.