title: New Prism Project - Use MEF or Unity?
body: <p>I'm starting a new personal Prism 4 project. The Reference Implementation currently uses Unity.</p>
  
  <p>I'd like to know if I should use MEF instead, or just keep to Unity.</p>
  
  <p>I know a few discussions have mentioned that these two are different, and they do overlap, but will I be missing out if I simply choose Unity all the way?</p>