I've built one significant project in Ember, and three in Angular (multi-month projects with a small team; requiring maintenance for the next 3-4 years; < $100k USD).
Ember 'feels' so much more right to me. I really enjoyed working with it and it reminded me of the desktop frameworks I used to work with. It's not without it's faults, but what is.
But sadly Ember just doesn't seem to be holding it's head up in the ongoing swell of JS frameworks. I think that is a great pity. But time goes on and they'll all be forgotten in a few years.
- clean model abstraction, which prevents soo much boilerplate - clean templates - components, partials, great re usability