I think each has their own strengths.
JF with its all-around good finish, considering it's on V5, and decent dials. The 3 hour marker is usually misaligned though.
Z+F has a better rotor color and closer thickness to gen. Dial colors except blue have yet to be seen. I don't see any misalignment of markers.
Both of them have 12 markers that aren't like the gen, and the printing isn't thick as gen, so there's minor flaws in both.
The rotor color of Z+F is only noticeable if you inspect the back of the watch which never happens, and anyone pretending it is real will be able to see the miyota movement anyway.
I think both are good choices. And one isn't a better choice than the other necessarily. If you use both of them a base watches for frankens then there is no difference, in my opinion.