For me, it would depend on the usage and other gear. I have the first gen Z and haven’t yet used the second gen. The Z7 does many things better than the D500 and the D500 does a few things significantly better than the Z7. I have three bodies I use often. The Z6, Z7, and D500. I primarily use the Zs but if I’m doing something where the AF is going to get challenging or speed is needed, the D500 is used. I bought the D500 for wildlife to compliment the Z6 (later added the Z7). The D500 is a very fast camera, AF is fantastic, and it being a crop sensor, the AF covers more of the frame, bringing it closer to the Z. I find the Z to be fantastic for slower moving and static wildlife and the recent firmware updates make it ok at some faster moving subjects. from the reviews I’m seeing, the AF on the Z7ii is improved but still not to D500 level (which is to be expected). I know you’re asking about the Z7ii, I have It preordered and haven’t used it yet, but my point is I’m not buying it to replace my D500 and don’t expect it to for my usage. I’m looking for it to replace my first gen Z and wondering if it is improved enough to justify it.