1. IOS (iPad)
  2. Android (Ex: Nexus 7)
  3. Windows RT (ex: Nokia Lumia 2520)
  4. Windows 8 Full (ex: Surface pro 3)
  
  My answer: Windowa 8 full
  Added (1). Other option: put the options in order for a top 4 list.
  
  My list:
  1. Windows 8 full
  2. Android
  3. IOS
  4. Windows RT
  Added (2). Other option: put the options in order for a top 4 list.
  
  My list:
  1. Windows 8 full
  2. Android
  3. IOS
  4. Windows RT
  Added (3). I accidentally put update 1 twice to to the page loading and glitches 
  Read more: Which tablet OS do you like?  
