OK, I looked at the proportion of bezel width on all three models and XF looks to GEN for me than ZF.
I measured than Outside Diameter of bezel and O.D. of xtal.
I got bezel / xtal O.D. ratio. When we assume that O.D. of all models will be 100 mm than:
ZF is definitely fatter, but I don't think it is closer to GEN than XF.
- GEN bezel is aprox 10.7 mm
- XF is close 10.5 mm
- ZF is 11.6 mm
It is my thoughts. PM me, if you will let XF go.
good review, I think you are right, here is the tentative compare: