I have a SwissGear. I love it.
I'm really hard on backpacks. I overload them, carry all the time on one side, throw them around, and drag them around construction sites. It's my mobile office.
My current SwissGear I've had longer than I can remember, and there are no signs of wear or issues developing. I would have gone through at least 3 cheap backpacks in the time I've had this one.