If we approach the question as engineers, scientifically, with numbers and studies, not anecdotes and hand-waving, then Clojure is hands down the best language in terms of productivity and bug reduction.
To this day, I know of no study that was able to demonstrate superiority of statically-typed languages - [1].
What studies clearly show, is that both in terms of productivity [2] and bug reduction [3], expressivity reigns supreme.
And Clojure is the most expressive [4] out of languages that can leverage huge ecosystems (Java and JS, soon C++ through Jank dialect).
1) Electric Clojure 2) Rama