MVC vs MVVM

Model-View-Controller works very well if you want to have a single model and multiple views of the data, which is something you often want with a list. However, there are also many scenarios where you may want to have multiple models of the same or related data. In that sort of scenario, you may want to consider the Model-View-ViewModel that has become so popular.

http://loosexaml.wordpress.com/model-view-controller-for-a-list/