I've recently gone from a D800 to a new D7200 plus a used D600, a combo that suits my needs.
I use the D7200 with a Sigma 150-600 Sport for birds and a Tamron 24-70 as a walk around kit, and the D600 for wide work and night shoots.
The money I saved on a pre-loved D600 enabled me to also get a Samyang 12mm f2.8 UWA, mainly for nightscapes.