Thanks everyone. I ended up with a fastpack350 the newer one. I will be able to carry all my gear and my notebook for the plane ride.
Ya I won one of those in a photo competition and used it for almost a year as my daily pack (I take my camera to work and home everyday in it and had room for my lunch and laptop). Great little pack, I finally got sick of its look and decided to get a timbuktu to replace it, and have been happy with that, but can't wait for my kickstarter bag. I guess I just felt that the fastback (I actually won both the 250 and the 350) is just to dorky (I had the red one), but very functional indeed. I also found that having a sling style bag encourages pulling the camera out for shots as I'm walking to work, whereas the backpack style is a bit more work to pull the camera out and thus I found that I would often skip a shot I might have otherwise taken. Happy shooting.