After much deliberation and disappointment with the XTrans sensor in the X20 , I bought an X100s this afternoon for an upcoming trip.
My key requirement is great resolution. After some test firings along with my X100 , the increase in resolution seems real enough to justify the purchase.
I don't recognise any other meaningful benefits in the new camera at this early stage.
Sure it's a bit faster but for the kind of use I will put it to , the old X100 was fast enough.
Bottom line for me seems to be that the upgrade might be worth it as the Fuji finally matches old my Leica X1 but is much nicer to use.
If you shoot jpegs only I suspect that the old Bayer Sensor may be better as I've already seen smearing in darkly lit foliage and I've NR set to -2.
Still think XTrans is basically one noisy sensor.