The reality is the X-T3 or X-T5 is a better Zfc than the Zfc is, which is unsurprising as they are higher-end bodies and that's what gives them the advantage (better viewfinder, better build, etc). I do still need a light carry body though and the Zfc is better than the X-T30 series for that (better EVF, ISO dial instead of film sim dial). Yeah, the Zf is also a better Zfc, but it's comparatively huge and heavy (F3HP size & weight, slightly larger and heavier than either the Z5ii or the Z7) and I prefer having something more akin to a FM2n (and the X-T5 is very close to the FM2n in size and weight, 10mm less wide, but otherwise near identical).
On the flip side, no Fuji can match the IQ of my FX bodies, nor the AF system of the Z5ii, but I don't actually lean on that very hard. And I definitely prefer the Nikon NEF files I get from my Nikons, at least to the older 24MP and similar Fuji files. Of course RAW converter performance with X-Trans continues to improve and what was marginal in 2020 Lightroom is actually pretty decent when I run my old X-T2 files through Pixelmator Pro now.
Fuji on the other hand offers more selection in terms of classic UI cameras, a consistent APS-C lens line (and one far larger than even the entirety of the Z mount line, aside from a generally weaker long tele selection). And quite frankly, a lens line (1st and 3rd party) which generally is both good and small(ish) which I prefer to the larger and tending to expensive Nikon Z lenses.
The Gripping hand? Fuji is very late in its current 5th Gen X-Trans platform and expected to launch a new generation in September, likely with an X-T6, and new Fuji bodies are rather overpriced for their somewhat ageing performance as Fuji has not discounted older bodies much at all (there's a couple of $100-off deals right now but that's it).
It's honestly annoying to be in my head right now. I wish I could just buckle down and shoot with what I have rather than getting burned in 'what would be a better choice'.
I did a pretty deep dive on comparative value and I could swing a basic X-T5 setup for what I have right now. But at the same time I do see some issues, the X-T5 gets roasted for middling build quality (notable since both of my FX bodies have notably excellent build) and the AF system. The reality is that aside from the lens system (which I can adapt), the UI and some extra (and unneeded by me) speed is all the X-T5 brings to the table over the Zfc/Z7 combo.
I'll stand pat for now, and consider maybe trading in the Z5ii for more glass.
