I've gifted my D7100, alongside a 35mm DX lens to my girlfriend.
For a few weeks I was debating on going FF, with something like a D750 or maybe even a D810, but finally decided against it.
Found a fantastic deal on a D7200 in pretty much mint condition, as the guy using it really took good care of camera. Even got a new original Nikon battery in the whole package.
The first lens that I got for it is another 35mm DX, as I loved using that lens on the D7100. It's probably one of the best DX lenses you can get (at least from all the lenses I've used).
I ended up getting a Nikon Z50. The eye-tracking autofocus really got my attention. I haven't really been shooting as much as I used to either so I'm hoping the small form factor and a new addition to the family can rekindle my passion for photography.