Jansport.
When I was taking community college classes, I busted the zipper of my (nevermind, already worn out) Wenger, and a cheap one lasted a week before the right strap AND haul handle ripped off. I used a USGI surplus Three Day Assault Pack and it was a disaster. While not really a frame pack (heavy plastic sheet slid inside was all), it was very heavy, and the excessive amount of straps hung on EVERYTHING. I should've went to the mall (JC Penney is the only company that ever sold Jansport here, but I've not been in the local mall in a while now) and got a $40 or so JanSport instead of blowing $100 on that army pack.