Phoenix, for a lot of the same reasons I used to have for Rails including: * Fast development cycle * Conventional * Great community * Good ecosystem of lib

Phoenix, for a lot of the same reasons I used to have for Rails including: * Fast development cycle * Conventional * Great community * Good ecosystem of libs to take advantage of * "Magic" (although Phoenix's magic is much different) And some of it's own like * Great concurrency (which feels like a free win over Rails) * Functional programming * How Ecto, the ORM works * How simple it is, even with the "magic" included. * How assets are handled, via a thin layer to Brunch, Webpack, or other JavaScript asset bundler There's a few more, but I think those are a lot of the major talking points.