Ember.js is already proved, the best framework out there nowadays. Corporate ready, production ready, future proof. I'm really looking forward, that Type Script support will be landing soon in the framework, so it will be a concrete solid environment. The whole addon ecosystem, with Ember Data and Ember CLI is just top-notch.
You can check here with this tutorial, how easy to write a complex application with Ember.js: http://yoember.com