these are two nice laptop backpacks:
they are very expensive but they are great.
i have a targus sport laptop backpack. i bought several years back. i use it everyday (fully loaded with heavy books) and that think does not want to break! i want it to break so that i can get me a better looking one (mine is grey/black) and it makes me feel i own a buick skylark. it is not made of the greatest materials, but it resists abuse like you would'nt believe. so if you get one (i've seen them at ebay for $40) you'll never get rid of the sucker, dang
anyway, if i were to buy me laptop backpack right now i would go for this one:http://www.ebags.com/eastpak/masterm...?modelid=10439
it will camouflage your laptop from predators
(the tumi and victorinox bring a lot of attention) and you will make a smart move because it is really cheap.