Had a Kathmandu backpack for the last 3 years, not given it an easy time by any means and it has held up exceptionally. Very good quality.
First few reviews suggest it falls short of the original earlier versions.
Not sure about these bags but Osprey bags are great, well worth the money. I have 2 one for cycling to work and one for days out with the kids.
no idea, just ordered one and will let you know