If you are looking for something about that size but money is tight, try the laptop bag selection at your local office supply or electronics chain stores. They might not be quite as well suited, but they are generally less than 80 bucks for a good one (not great, just good), and they also have the advantage of being basically invisible to the masses if you are in an urban environment. They just won't take the same kind of abuse that something from Maxpedition will, but neither will something from BHI.