Does anyone who uses an aluminum macbook/pro bike to work or school with it in either a backpack or messenger bag? I posted a comment about this in the MacBook Pro forum, and I'm not altogether sure this is the most appropriate sub-forum, but I feel this is a specific request. I know there are a lot of threads about durability of the aluminum, but they tend to boil down to arguments between users that leave their laptops on a desk and those that take them everywhere. I am asking those of you that take their laptops with them, whether it's school, work, etc. I ordered a new white macbook this week, basing the decision on perceived durability for putting it in my backpack for class, and I absolutely HATE the screen. You angle it so that the dock icon colors are correct, and the top of each window is beige instead of gray. It's horrible. Oh, and the LCD case closes slightly crooked so there's a small overhang on one side. Anyway, I'm considering trading for the 13" pro but still have concerns about denting or warping the case while it's in my pack with books and other stuff. I'd love for anyone who caries their laptop in a pack with heavy books has can chime in, but I will be cycling to school regularly and plan to take the macbook with me everywhere. And no, I don't expect the unibody to withstand a car hitting me. Anyone here with experience? If it's too risky I'll just try to put up with the macbook's sh***y sh***y screen.