laptop bag - 15.2 PB - help

I visited the local compusa and say the Brenthaven pro file 15 bag and I knew that is the type of bag i want. It small enough but contain enought pockets to put the pb accessories. But the price is to high for a college student. I knew your help to find other cases that have the similar builts. What really matter to me is the hard casing this bag has. Its very sturdy and has a rectangular shape mold that adds additonal protection. Its very hard to describe. What other bags that is more affordable and has this type of padding.

Thanks
-dmak

look at spireusa.com i got a bookbag there, that has amazing incredible insane protection. i think they have a slim bag, they are a little pricey, but so was your laptop, you need to protect it