Heinz, your commens are much appreciated.
I also do love the Zenith because of the technical features and the history.
This El Primero Defy has no date while other El Primero models have. A reason for eliminatimg the date funktion may have been for a deeper skeleton view into the clockwork.
A most striking argumrnt for the Zenith El Primero is the 1/100 sec chrono funktion. The watch has got a second powerhouse for that purpose. I know no other mechanical wrist watch with such function.
While most are fascinated by the nice design and bling of Hublot you are raising technical arguments. Technology versus style... that was exactly a reason for asking the audience for an opinion. I think the Hublot is great but Zenith may be the more interesting watch.
Life is complicated!