I'm in the former category and am very enthusiastic about Elm. Reason is great and will probably be more popular overall as it's less of a leap for most JS dev

I'm in the former category and am very enthusiastic about Elm. Reason is great and will probably be more popular overall as it's less of a leap for most JS devs as it utilizes patterns that are already being pushed as best practice and it's relatively loose in comparison. That being said, Elm offers a built-in architecture that reduces decision anxiety.