I actually got the Z6ii. I prefer the smaller file sizes and value ISO performance over megapixels. My previous camera to my Z6 was the 36mp D800 and I have zero desire to have more megapixels than that. I was originally worried about dropping down to 24mp of the Z6, but it was actually really delightful. The largest I have ever printed with any camera is 24x36, and I've done that from my first camera, the Canon 30D, which was 8mp. 24mp is like the perfect size for me in terms of resolution as I am fairly careful with composition in camera and only ever need to straighten a little bit (okay, maybe a lot sometimes ?).
My primary goal wasn't an upgrade per se but rather just a second body. For all of last year I would have been happy with a second Z6 and to work with identical bodies. In fact, if the button layout would have been different on the ii I would have gotten a second Z6. I worked with a D700 and D800 in tandem for a while and it was a pain because the ISO and WB buttons were swapped and I never could remember which camera I was using, so neither were ever intuitive.
But at this point I figured I might as well go for the second iteration. Right now my primary work is all manual focus so the new focusing system isn't a big selling point for me. And honestly with AF I shoot single point AF-C and track manually by actually moving my camera with the subject old school style. But, soon enough my kids will be back in sports and we have a dog now that we didn't have when I got the original Z6, so having some of those updated tracking systems should benefit me over time.
I am just really happy to have two bodies again. I will likely dedicate one to being a full Z mount and the other as a full F mount by just keeping the adapter connected, but right now I'm mostly using the ii, just because I can. I've only had it a few weeks as my husband told me I could get one for my birthday, but then I had to wait to find one. I stalked District Camera's website and the Friday after my birthday one came into stock at the Arlington store, so I ran down there to pick it up. ?