Windows 8 is entirely new OS. You can call it a smartphone-age OS. It has simplicity of Windows, connectivity and synchronization across devices and various services like Android/iOS and a brand new user-interface which is popularly called as Metro-UI. I would recommend you to go for laptops of HP or ACER which are powered by Windows 8 for the best experience. Please make sure you have at least 2GB of RAM for better performance.