What are the advantages and disadvantages of the three most common operating systems currently used for mobile devices (windows 8 and iOS)?

Will this help:

iOS:
Advantage:
Clean and secure
Disadvantage:
Customization is a headache and almost impossible

Android:
Advantage:
Complete Customization options and Easily Customized
Disadvantage:
Requires more security software

Windows:
Advantage:
Consistent with Windows UI (8)
Disadvantage:
Windows store is "still young"