title: Better to archive 1 large object or several smaller objects with NSCoder?
body: <p>I have a need to archive an array of objects of several different types. Each object has its own instance vars. </p>
  
  <p>Is it better to create singleton object with an array that holds ~20 archived objects, or have a single archived object that has an array of all the other objects? Sorry if that's confusing, but I'm a bit confused myself.</p>