my suggestion is get a crumpler bag. (crumplerbags.com.au or something)
I have the sheep-scarer (its a somewhat small knapsack) for my 12" ibook and damn... its the best freaking bag i could want to have. They're very expensive, but from my observation, the money is worth it for the protection you get from such a well made bag.
Yea anyhow the good parts are a) looks so damn good, i get complements on it. I got the black one which is so ninja. b) construction is top notch. the way its made, the straps will never ever break or wear out and break... its padded very very well and the integrated laptop sleeve is very easy and quick to use. c) there is no c!
yea i was so exited when i got it that i took pictures:
http://homepage.mac.com/pillowcase1/...lbumold28.html
I swear up and down by crumpler.
And no I do not work for crumpler... i just like my bag.