strabist

I do not own any of them myself, so I cannot offer any first-hand insight. Lenstip has thorough technical reviews of the Samyang 12mm along with the XF 14mm, which you may or may not find interesting.

As I am not the heaviest shooter out there, I am normally fine with the two original Fuji batteries I have. I have a few events coming up where I anticipate heavy usage of the internal flash of my X-E2, so I would like to get some more, but the Fuji batteries do not exactly come cheap. What are your experiences, good or bad, with third-party / off-brand batteries?