Microsoft Windows 8.1 - Ten Reasons to Upgrade
Microsoft has taken the brave step of merging user experience across device in their new operating system. It makes the experience seamless between tablet, mobile, laptop and desktop.
The integration with online communications (Skype) and cloud based services (OneDrive) mean that you are able to do so much more without copying files from one device to another. The Microsoft store has a massive array of applications (both free and paid for).