The only problem with OneNote is you need to build up a big volume of information before it becomes really useful. Buy it now, especially if you've chosen your school and can get any discounts. Then start using it and playing around with it. Experiment with different ways to organize by notebook, section group, section, and page/subpage. Look at different ways to use note flags. Use them a lot too; the more you use each feature of OneNote, the more it's worth above Word.