It highly depends on both your estimated production time, and what you need exactly. React covers only views, so the "V" in the MVC pattern, giving you freedom on what to use to implement the other parts. Angular, on the other end, gives you a full featured framework with the other parts as well (routing, HTTP client library, validation, and a lot of other things I'm not mentioning). There are also other frameworks (Meteor, Aurelia, Ember, others) worth mentioning, but again: it just depends on what you need.
As I said, your release date also plays a role: Angular is still in beta and I think it will stay there for some months still. React on the other hand is already stable.