We currently are on Backbone.js and liking it a lot. I'm curious about Ember.js and Angular.js maybe for some heavy refactoring in a one-js app. Here is a small bench that I made out of these 3 frameworks / libraries.

https://docs.google.com/drawings/d/1zYgHxUfRsgGSZKsCaU8M1aPTPfvzE6luOECu-KqLU18/edit

What do you think about that?

Thanks for your time and your answers!