Flask中的ReactJS Server端渲染

I am just starting to learn ReactJS and am determining if its worth switching from AngularJS for use with Flask. I know one of the benefits of ReactJS is the way renderToString works to render and HTML string for faster load times and better SEO. From what I have read is the SEO is much better than what AngularJS can do although google is working to improve crawling Javascript. I am just starting to learn ReactJS and am dete