title: CATransform3D vs. CGAffineTransform?
body: <p>Whats the difference between the two?</p>
  
  <p>I'm sure they have pros and cons, and situations they are better performers in.  </p>
  
  <p>Any resources that compare the two? </p>
  
  <p>Is one better for animation (I imagine the CATransform3D)?  Why?</p>
  
  <p>Also I think I read somewhere that text clarity can be an issue, is one better at scaling text?</p>