Everyone talking about the movement but what really shines for me on the new ZF white ceramic is the overall case shape/screw constructions + placement.
It is by far the best I have ever seen on a RM rep.
Especially the curvature of the side profile, the arc of the bezel, and how it integrates flawlessly with the strap, not to mention same thickness as gen. Also how the placement of the strap screws are now placed correctly closer to the edge which makes the bezel seem more elongated near the strap, like gen.
I would say the overall shape construction of the ZF ceramic versions have the other factories beat by a long shot at the moment.
Here's a few pictures comparing all current factories that are offering the white ceramic RM055.
Just look at the differences in side profile case construction and judge for yourself.
GEN
ZF (gen like)
RMF (Shape is off, not curved enough, too flat)
BBR V3 (shape is off, especially near the strap integration it's much too thick)
T+F (shape is off + overall case is much too thick)
APSF Ti (not the ceramic model since they dont have one out yet. Shape is not bad but it's much too thick)