I use a Tamrac Expedition 7 backpack - has the added benefit of going out into the field with me. The 8 is a bit taller but otherwise the same. It seems to do a fine job protecting my gear. It fits into a 737 overhead fine but it was a very tight fit into a Embraer or Canadair RJ (I had to remove the contents of the laptop pocket, put in the bag and then replace the contents)

Dan