Here's a tool that you can play with to see how well Elixir scales with an embarrassingly parallel task (matrix multiplication) when throwing more CPU cores at it: https://github.com/a115/exmatrix
Yes, Elixir does well here, but I still prefer Lisp syntax. I would like to see a comparison of LFE and Joxa. Joxa seems more like Clojure.
This presentation is a good one, but I'd like to see a nut and bolts comparison with side-by-side code:
http://www.slideshare.net/BrianTroutwine1/erlang-lfe-elixir-...