You might also want to compare to Idris (and maybe Epigram, but its no longer in development).
http://www.quora.com/How-does-Idris-compare-to-other-depende...
http://www.reddit.com/r/haskell/comments/132kg0/agda_epigram...
http://www.reddit.com/r/dependent_types/comments/q8n2q/agda_...
http://stackoverflow.com/questions/9472488/differences-betwe...
All have pros and cons; i like that Idris can compile to JS (https://raichoo.github.io/posts/2014-01-28-improved.html)