Right, I've put this off long enough. The D750 has been brilliant (best camera Nikon ever made, fight me) but I'm shooting the lad's under-14s on Saturday mornings and the AF just can't keep up with kids running straight at it in the rain. Shutter count's well past 150k as well.
Options as I see them: used Z6 II, can get a mint one for about £900-950 at the moment, or a new Z5 II which is a fair bit more but newer AF and a proper warranty. I'd keep the 70-200 f2.8E on an FTZ either way. Not paying for a Z6 III, I'm not made of money.
Used every time for me normally, but the Z5 II AF is supposed to be better than the Z6 II's? Can anyone who's used both settle it.