When to use ModelAndView vs Model in Spring?

Question

This might sound dumb to the Spring experts, but I have to ask:
How do you decide on when to use ModelAndView and when to use Model

Answer 1

One difference I can spot is with ModelAndView object you can set a direct reference to a view object:

ModelAndView mav = ...
mav.setView(myView);

Whereas if you use Model and String, you need a view resolver to resolve the view name into an actual view

public String myHandler(...) {
   return "myviewname"; // has to have a resolver from "myviewname" into an actual view
}