I've now tested this lens on the X-E1, X-E2 and the X-T1 and it performs well of all of them but I prefer using it on the X-E2 or the X-T1. I think it performs a little better on those two cameras. That's not to say its useless on the X-E1, quite the contrary but I've now decided to keep the 18-55 kit lens on the X-E1 and use the other two bodies for the rest of my Fujinon lenses.

The images really let you make a lot of adjustments to them before they fall apart which is something I can't say about the mFT images. I really have to be careful about exposure (i.e. ETTR) because noise will raise it's ugly head at the slightest hint of underexposure. I really like converting the Fuji files to monochrome too, much easier than the mFT files.