Fujifilm S5 Pro still best skin tone Camera ?

I have used s5 pro for portrait photography with nikkor 17 55 f2.8 lens for several years. I am always astonished with its portrait capability. Images from my Nikons cannot get near its natural skin tone rendition. My question is, are the x100 and pro 1 better in this regard or is the s5pro still unmatched !