I'll step in here and await to be shot down, but having used a D7200 for about a year and a D500 for 2 months now, I actually think that the D500 files are better (certainly at the higher ISO's) and more pleasing with less PP required than the D7200. I've yet to see the 3mp advantage in resolution that the D7200 has nor the slight DR advantage it has on paper. For me personally, the D500 is the best DSLR (for multi purposes) I've ever owned. I tend to spend far too much on gear and change bodies like most change underpants, and aside from my D3s I had a few years ago (which was another wow camera), the D500 just give me a similar wow factor. From the handling, the pro layout, the gorgeous rear screen, the incredible AF and FPS etc, it for me is a much better camera overall. Don't get me wrong, if the D500 hadn't have come along I would have been perfectly happy with my D7200, it really is a very good camera in it's own right, and one of the very best APS-C units available (from any manufacture) but never really a true replacement for the D300(s) or a real competitor for the Canon 7D MK II.
To be fair the D7200 does have better battery life, and a much simpler WIFI setup (but one that currently actually works unlike the D500 Snapbridge which is flaky at best), and is a fair bit lighter. Despite that, as I said for me, the D500 is almost perfect (nothing that a little firmware update can't cure), and really is a beast of a camera. Well worth the extra £ in my mind. In fact I'm finding I'm using it more than my D810 now (yes back to DX), but almost lamenting me selling my 17-55 F2.8 AFS some years ago (although my copy of the 16-80 F2.8-4 VR is simply superb and easily a match so no real hardship).
So I still had my Siggy 10-20 (15-30 Equiv), The Nikon 16-80 (24-120 Equiv), just need to decide if I keep my 70-200 F2.8 VR II (which is fantastic but big and heavy), or trade it in against the F4 version. Anyone any ideas on that front ?