I used both a fair amount. I liked both languages quite a bit, but I always found the tooling around Clojurescript difficult to use. ReasonML was a much better

I used both a fair amount. I liked both languages quite a bit, but I always found the tooling around Clojurescript difficult to use. ReasonML was a much better experience for me. After using both I think I personally prefer the experience of using a typed language over a dynamic language. This was from the perspective of making UIs with React.