title: Which is better? Between using image file and draw vector shape
body: <p>As I said on the title.
  I just want to know which is better between using image files and drawing vector shapes (or path).
  I know that using vector is better for appearance but what about performance.</p>
  
  <p>And if this depends on cases. Can anyone explain.</p>
  
  <p>(This question may include WP7, Silverlight, WPF or even in general cases.)</p>