Buy Windows 10 Home and Professional by Microsoft as it provides the best built-in support for newer types of hardware including secure boot capabilities with UEFI, USB 3.0, Bluetooth adapters, high-definition (HD) screens and SSD drives. Windows 10 also includes RunTime apps for Mail, Photos, Maps, Calendar, Groove Music and more. You can download over 700,000 apps from the Windows Store. The quality varies but includes free Microsoft Office apps such as Adobe Photoshop Express, AutoDesk Pixlr, Code Writer, Dropbox, Flipboard, Fresh Paint, Line, Netflix, Notepad++, OneNote, Shazam, SkyScanner, TeamViewer Touch, Trello, TuneIn Radio, Viber and Wunderlist. Suitable for touch screens, available in 32 and 64 bit formats, this is so far the best Microsoft Operating System in comparison to the older Windows 7 OS.