Arc'teryx Blade 24 Backpack
Though I wear (abuse) their outdoor apparel, I don't have much experience with their bags but the Arc'teryx Blade 24 Backpack shows some promise as a great laptop backpack for a variety of situations. The Blade 24 holds a 15" laptop in it's main compartment while another compartment fits paper, magazines (if you still use them), or iPad. A couple other pockets keep your phone and other peripherals handy while an external pocket under the back shell keeps your travel documents safe and out of sight. A clean looking bag with generous straps.
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