I avoided OneNote. For anything along those lines I use Evernote. Great program, freemium service, iPhone app...
Are you a Mac user? There are lots of amazing features about OneNote. Some aren't in Evernote.
One feature I use daily is the ability to sync with other sources. At home, and for 'personal' notebooks, I home them on a local NAS. I can start typing on one machine. Shut it down and start up where I left off on another machine. For less secure stuf, I can sync in the cloud. Cloud sync can be shared and updated via a web app.
OneNote supports voice and video notes. Fire up the voice recorder. Typed notes are synced with the recorder. If speaker tells a funny joke, and you type "funny joke". As you review notes, click on "funny joke" and the recording advances to the point where the joke was recorded...
OneNote also supports OCR. I was researching kitchen appliances. I took a photo with my phone. Inserted it into my research notebook. In the background OneNote did OCR on the photo. When I searched for a model number, it searched within the photo.
And as someone mentioned, there are now apps for iPhone, iPad, Android and Windows phone...
What are some of the features you really like in Evernote?