<p>It’s a matter of preference, and self-control. A lot of people with laptops in class often end up browsing the internet instead of paying attention and taking notes with it. After a couple of years, I have developed a system using a combination:
For CS classes, I use my computer so I can try out the code we’re designing (unless the prof. forbids computers).
For classes with powerpoints posted before class, I use my iPad and draw/write on the slides
For math classes (to write equations), some science classes, and boring classes (to avoid distraction), I write by hand. And usually end up doodling a lot.</p>