I didn't like the LAPG 3-day bag, felt too cheap and lots of threads loose. Just seemed like you got what you paid for.

That being said, I have pretty much the same bag from Cheaper Than Dirt. Kind of heavy, but holds a lot, sort of comfortably. I did 5 miles in it the other day.

I bought something this for work/daily use - really wish I'd bought 2, as it would have a made a good light BOB. As it is, this bag would be my 'get home' bag if situation warranted.
http://www.amronintl.com/kelty-peregrine-29-backpack.html