For me Angularjs seem not scale well enough for big complex web application. If I am not wrong, even google they are not use angular.
Emberjs is good so far, But basically we still need jQuery, Handlebarjs, and Emberjs library itself. And jQuery DOM manipulation is about almost 10 years old. I think It should be the time for web components.
So I decide to spend my free time in the next few weeks to dive in deep into React.js.
Good luck, Have fun coding!