Reagent is the best ClojureScript implementation of React out there. The nice thing about it is that you can do very interesting things with Reagent without ever writing a component as a React class. There is, of course, a way to do that simply with create-class. Another great thing about Reagent is how simple it is to convert a pure Javascript React component with adapt-react-class. I also really like Reagent atoms. Reagent atom cursors alone are worth it to include this library in your build! Reagent is the killer app for ClojureScript, I use it in just about every one of my ClojureScript projects.