If you look at Google trends there is a massive spike in Angular interest: http://www.google.com/trends/explore#q=angularjs%2C%20emberj...

I'm not saying this should play the biggest part in your descision, but it's worth noting. I implemented 2 small apps in both frameworks, giving me a small fixed amount of time for each. I liked both, Angular gave me less head-scratching and out-of-the-box Twitter Bootstrap integration.