Zorin is an Ubuntu-based OS.
Ranked in these QuestionsQuestion Ranking
Pro Windows desktop style
The desktop UI was made to resemble Windows 7, but alternative settings are available.
Zorin is compatible with Ubuntu's sizable repositories of Free Software.
Pro Good Selection of pre-installed software
New users may be unaware of what software is available for Linux, but Zorin includes a good selection for everyday tasks out of the box.
Pro Bundles tools for changing the look and feel of the distribution
Zorin includes look changer and theme changer.
Pro Accessibility features
Pro Partial Windows compatibility
Zorin includes WINE and PlayOnLinux to run many Windows applications and games.
Pro Ubuntu got too big
using too much resorces
Pro Installer can set up dual boot
Pro Low resources consumption
Con Limited desktop styles in Free Version
All free editions only offer Windows XP, 2000, and 7 and Gnome 2. You have to pay $9-10 in order to get Unity (Ubuntu) and Mac OS X themes.