So after shooting a a while with a D7500 I do prefer the images and colours on my D7200. The FPS and Group Auto-focus on the D7500 is nice but overall I would say the D7200 would be my preferred body. I have always used the Vivid colour setting under Picture Controls in the D7200 but find this setting in the D7500 a bit too colourful so I will try shooting in Standard next time out and see how they look. Tried photographing a swan using Highlight Metering, and then shot without and their is no visible difference in the photo. My lesson learned is something newer is not necessarily better but for my long travels having a 2nd body was a good idea.
* Normally shoot JPEG but I will shoot in Raw next outing and see how we make out in post editing. I tried this years ago but never saw any visible difference between the files but from what I have been told by many photographers is the difference and flexibility you have in editing, so I'll give it a try.