OneDrive is phenomenal. I've been using it for the past year or so and it's been a breeze.
[1] http://wmpoweruser.com/watch-what-you-store-on-skydriveyou-m...
http://www.theguardian.com/world/2013/jul/11/microsoft-nsa-c...
Nowadays, I rarely use Dropbox anymore if it is not for group projects. I don't know why but OneDrive seems unpopular among my friends.