I have had this backpack for 5 years, and have used it every single day of that time, carrying a usual load of 10-15 pounds. It still looks new.
The amount of thought that went into the design really shows when it matters. At 33L, it has often been my only bag on week-long pop-up camping trips. It has been to Alaska with me twice. Even completely packed out, this thing still manages to be comfortable on my back.
It is far-and-away the best backpack I have ever owned. As a work bag, even as a light backpacking bag, it is really tough to beat. I'd give it 6 stars if that were possible.