I really like the space in this backpack. I needed space for my computer a few folders a dayplanner etc. and it all fits. I also travel quite a bit for work and the easy access to the computer compartment makes it easy to take it out of the bag at the airport. I also love the open compartment to throw my headphones and ipod into so I can grab them quickly before I sit down on a plane. It is also a great place to sling a jacket through or an extra pair of shoes. The durability of the pack and the comfort were also important and it feels very comfortable no matter how much stuff I put in it.