I like Elm a lot. It's much much simpler than PureScript, lacks some of the advanced features, but as an advanced user of Elm, I've found I don't really mind -- all the important stuff is there (structural types, tagged unions and polymorphism working with a type checker, for instance, is very good, even if you don't have typeclasses).

I've made dozens of web apps with Elm, and I think it's fair to say that, when I started, I wanted the deep toolkit PureScript has. It turns out if I don't get it I spend more time writing code that delivers features. This is probably not true of everyone, but it is true of me.

Edit: also, Elm has a community (hard to manage for smaller userbases, like PureScript), and they have only been kind and eager to help in my experiences.