There are both great things and terrible things about iOS 6. Firstly, the good things: it's ever so fast and the app selection is unbeatable. From Vine to Fantastical to Clear, iOS is really the ecosystem to beat. This is why it's my mobile OS of choice. The negatives? No multiple user account support on the iPad, no good productivity support on the iPad, the rather stale grid of icons and no ability to set default apps (e.g. Chrome instead of Safari and Mailbox instead of Mail). Overall, it's a great OS.