I want to start using React but I think I'm going to stick with Angular for now. I have all of the gotchas of Angular figured out and I think I want to wait another year for the dust to settle on React. By looking at the flowchart it looks like the React ecosystem is still quite Alpha and learning to grow up.
As someone who came from angular, if your app is going to get large react is far better than angular.
For small pages / forms angular is in the sweet spot, so it depends on how your application is setup (not to say you can't do large apps.. but performance is harder in angular)
Looking to use react because of code cleanliness. Never had a performance problem with angular and have done two apps large apps thus far. I feel like people who have performance problems are just putting too much html on the page, and should rethink their design and rendering philosophy.