As far as X-Series cameras go, you can’t get much more different than the flagship X-H1 and the mid-range X-E3.
The X-H1 is the most robust, most advanced and unsurprisingly, most expensive Fujifilm camera to date. It is also equipped with features never before seen on an X-Series camera, the most important being 5-axis in-body stabilisation.
The X-E3, by contrast, is a rangefinder model with an excellent array of features but a smaller and less solid construction and a less prohibitive price tag to match.