I've done a lot of Clojure. For iterative/REPL-driven development I find Haskell a lot more pleasant. The types drive how I think, provide way-way-way better feedback on mistakes, and provide a new modality for querying my code in the REPL.

As a bonus, the UX to ghci is better than using nrepl/cider in Emacs. Reload "just works" and works more quickly than reloading namespaces in Clojure. I was gobsmacked when I saw how much better ":r" worked in ghci than reloading in the Clojure REPL.