Nikon's current best SLR camera?

Nikon's best SLR camera at present includes many grades and models from flagship to entry.

In the field of flagship Quan Huafu SLR camera, D6 is Nikon's best SLR camera at present.

In the field of high-end Quan Huafu SLR cameras, D850 is Nikon's best SLR camera at present.

In the field of mid-range Quan Huafu SLR cameras, D780 is Nikon's best SLR camera at present.

In the field of entry-level Quan Huafu SLR cameras, D6 10 is Nikon's best SLR camera at present. (Actually, D750 is definitely better, but it is not the "best" because of its higher price. )

In the field of high-end aps-c format SLR cameras, D7500 is Nikon's best SLR camera at present.

In the field of entry-level aps-c format SLR cameras, D5600 is Nikon's best SLR camera at present.

The so-called "best", in fact, there is no absolute standard ... Different needs mean different selection goals ... As long as you meet your own needs, you can do the best ... Nikon SLR cameras of different grades above are the best in their respective positioning fields.