Hey guys, I am looking for a bag (preferably backpack) for my MacBook Pro 15". I am on a tight student budget (<RM250). I will be going to a university in San Francisco, so I prefer to have a backpack as it is much more comfortable for me while commuting using public transport. Messenger bags are also considered, but backpack is my main priority.

I love Crumpler's bags but their backpacks are a little too expensive. King Single is way out of my price range, but I can't find Private Zoo in Garage Sales.

I might be considering Alienware's Orion backpack too.

I will definitely consider Targus if there are any simple, cheap backpacks.

Any recommendations?

Not the best lah, see this my favorite:
Tom Bihn