I love OneNote. It came bundled with Office 2010 for me, so if you don't use - or want to buy - Office, then ignore this. However, for actual notetaking, I favor it to all others. It is very easy to use, and Office users will have no trouble learning how to use it. It's not the best for mobile integration, but I primarily used it on my laptop for class notes, mind mapping, and other purposes where stability and usability were most important.