My Gregory pack has held up well albeit being on the upside of 5 pounds. I have a smaller Geigerrig that appears to be bullet proof. Again though, not lite.
While I'm transitioning to lightweight, I still want to be able to haul up to 35 pounds on occasion with around 3,000 cubic inches.
Open pockets, especially mesh seem like they could get caught and rip.
I'm leaning towards Granite Gear as well as Luxerylite. I would prefer supporting a smaller cottage company.
My budget is around $300 to start. In the case of the Luxerylite, I would have to purchase additional cylinders at a latter date.