For me, the Ploprof was the first OVER-engineered dive watch of it's time. We now have others like the Rolex Deepsea, Blancpain 500 Fathoms, etc...but Omega was the first to do it with the Ploprof.
And with the help of Jacques Cousteau in it's creation, there is no better provenance. Got to give them credit for that. π