I love OneNote. I use it constantly for everything. And now with their new Android mobile app, I've been able to drop Evernote. Don't get me wrong: Evernote has great potential, but it just doesn't stand up against Microsoft's OneNote.
Recently, the OneNote desktop/Surface Tablet app received an update that allows you take a picture of anything - a whiteboard, for instance - and save it as a note. You can then search the text of the image. Very cool!
Check out the video: