I sound like the tablet PC broken record, but Tablet PC!! you can type out your notes, and then, go back later and handwrite, highlight and annotate your notes digitally with a pen, plus keep note sections, link between pages and note sections - the whole nine yards.
Seriously check out
OneNote - It does everything paper notes do, but waaay better, and does everything that you need out of taking your laptop to class.
It's also lighter to carry one laptop and your charger than one laptop and six notebooks. I tend to keep a little bit of paper on hand in case my battery dies out a few minutes early, but the tablets out now (mine is 3 years old) are boasting battery life longer than mine had originally.
Dell has a pretty good sales pitch :
http://www.dell.com/content/products...04&l=en&s=hied
Fujitsu, Toshiba, IBM and Gateway make tablets that I know of. Best battery life is a toss up between IBM and Fujitsu. Best processor belongs to Toshiba. Friendliest price goes to the Gateway.