I currently have the XT2 with me as a rental to compare with the a6300. Posted some experience on dpreview and got a lot of backlash for it. My goal was to compare similar price points and focal lenghts. So I compare the XT2 with the Costs me around 150 euro for 4 days. Quite a bit of money but I really wanted to try the Fuji out before buying. Some observations. Mind these are very subjective, but I can only post what I'm experience so maybe other people can get something out of it. I'm not proclaiming the absolute truth here, nor am I trying to bash either brand/camera.
So this is what I can post after a few hours (more to come...)
+ build quality of the Fuji is very very good, really feels like those older SLR's that seemed to never break
+ I love the dials instead of the PASM modes on other cameras, this is really a major thing
+ JPG rendering and noise reduction is WAY better than what Sony offers. In raw they are pretty close, maybe a little bit of an edge to Fuji
+ white balance on Fuji is definitely more consistent than the Sony
- Sony a6300 is noticeably faster in focussing in AF-S, both with the 16-70 vs 18-55 and the 50/1.8 vs 56/1.2
- the 56/1.2 is very large and heavy but more annoyingly seems pretty sluggish in autofocus and I hear the motor and feel the glass moving. Of course it's 1.2, I know...
- the grip...nah, I have a very hard time comfortably holding the Fuji. The a6300 has a more deep grip and while smaller, it's easier to grip for me. The D750 is no comparison, amazing grip there (bulky camera)
- the XT2 + 56/1.2 is as heavy as the D750 + 50/1.8 and the D750 performs amazingly well there
- I have a hard time getting the XT2 to meter correctly, often the EVF/LCD shows colors and exposure completely different to what I'm getting as a final result. On my a6300 whatever I do on the camera is reflected on the EVF/LCD. I did check the menu setting on the Fuji for 'live view' or whatever it's called, which is on. Strange.
- I'm very spoiled by the AutoDRO of the Sony, which seems to work a lot better than the Fuji
This all may sound negative but I have to admit there's something pretty special about the Fuji, but I'm not sure I could leave my Sony for it. If Sony had the jpg rendering, the white balance and noise reduction the Fuji has, Sony would be on par. And yes, lenses on the Fuji are great but the 56/1.2 is very heavy compared to the 50/1.8 on the Nikon for similar DOF wide open.
Going to test a lot more the next 3 days. Also have the grip but not planning to buy that anyway.