If you're looking for a backpack to carry your laptop, check out those available from Tom Bihn. I've received my Brain Bag two weeks ago and I still haven't found anything wrong with it. I ordered the Monolith laptop case to really protect my laptop and a Snake Charmer for all the cables. The Brain Bag was a bit larger than I suspected, but there's no substitute for cubic inches ;-). If you don't want or need a big backpak, the Smart Alec might be something for you.
I know the backpacks might be a bit expensive, but so far the Brain Bag is worth every euro I spent on it. Just don't forget the taxes you need to pay when importing from overseas.
I must be becoming greedy. I'm now wondering if I might need the Freudian Slip