As for transporting the laptop, it is only stowed for transport after a complete shut down. The homework is backed up on two seperate usb thumb drives. Once I get my Desktop on a router, i'll have it set up so I can SSH in and push the files into a CVS server from anywhere. I'm not worried about the screen cracking, I can always plug a monitor or TV into the back of the laptop, not to mention I probably could replace the screen myself.
Right now, It looks like I'm going with either Arkel or Ortlieb. I've heard plenty of good reviews about their products. Not to mention I'm willing to dish out a little extra because it is a wise investment (not to mention my back is slowly getting frustrated with me). For now, it seems to be coming down to the price that my LBS will charge me when I order them.
flyingcadet