Just recently switched to the D850 from my Canon 5d mark IV setup, and was curious to see how the files looked compared to my tried and true Canon setup. These were taken with the D850 and Nikon 85 f1.8g lens. Exposure was SS 1/250, f5.6, iso 100 from what I remember.
In particular, I was curious whether there was an acceptable amount of sharpness retained with the medium RAW file, as I often would rather shoot at that 26mp mode for web only work (and to double the shots out of my cards). I was also curious how the skintones would look. The images below are non-retouched, with only minimal global post-processing tweaks.
The TL:DR version is that the medium RAW files are totally acceptable for me, but the large RAW files are amazing. And as for skintones, I have to admit that I prefer the canon skintones out of the box - there is that trademark green tint relative to Canon's magenta tint. Personally I think it's easily corrected with HSL in the orange and yellow channel.
Updated: I was just told that the "Camera Portrait" profile in Adobe Lightroom CC is a better one for Nikon files. I've reprocessed the two uncropped images and I think they look a lot better.
On to the photos so you can judge for yourself: