I am going on a 3 week backpacking tour of Europe next month. I am also going back to school as soon as I come back, and I need a backpack to hold my 17″ laptop. I wanted to buy just one backpack instead of two to save money. Northdace and Jansport are great backpacks, but my budget is $60. I need the laptop holder, at least two separate compartments and a water bottle holder. Thanks for your help.