Backpack for Dell 600m

I'm looking for a relatively cheap(under $50) backpack for a dell 600m, but I also want it to be able to last and hold a couple books.

If not, would a laptop sleeve work, how effective are they, and what would you recommend for a sleeve for my 600m?

Also, what about a messenger bag like http://www.ebags.com/jansport/volta/product_detail/index.cfm?modelid=57279 would that work for my needs? As far as these go are there any other good messenger's you'd suggest?

Which of these 3 options would be best for me. I already have a Jansport backup that I bought last year.

I know I'm asking a lot, but I really have no clue when it comes to this stuff. Thanks in advance.

 

If anyone can please reply to this with some inkling of information, it'd be nice. I need to get one of these within the next week.

 

I don't like messenger bags ar all, especially if you have heavy items in there, just not enough support if you ask me. Jansport has great notebook bags that should be near your price range, along with Targus. I'd recommend a backpack though.

 

Okay thanks a ton.