This is a great discussion topic, with classes starting back up today. I personally prefer using a laptop to type
notes because you can easily move around bullet points, quickly make study sheets out of your
notes, and can print the
notes with a laser printer so it is easy to highlight them without smuging the page. Plus, if the lecture gets boring, you can always go on Facebook or... MacInsiders
Disadvantages: not all lecture halls make it easy to plug in a laptop... so your laptop better have a kick ass battery otherwise you'll have a big brick to carry around hoping you'll be able to snag an open outlet in your next class. Always have a notebook and pen backup handy in case this happens and you forgot to charge your laptop battery the night before a long back-to-back class.
Second, it's hard to draw diagrams on a laptop. So if you're in a class with diagrams or lots of charts connecting ideas, then it is hard to quickly jot this down. Most classes have handouts for diagrams, which you can then draw on if you have a pen handy and
take notes on the handout sheet if need be.