I didn't have LOOK bindings until recently (about 4-5 years ago), though I did buy a set for my wife about 26 years ago. I do like how they perform as I am on PX15's. What is even more funny is that everyone in the house Look binding (be it labelled Rossi, Roxi, Look or Dynastar) on six different current skis.
What I find interesting looking at the photos and dates is that the Original Nevada toe appears to be the grand-daddy of the top Pivot and PX bindings. What this shows that even though the toe was designed in 1957 is the longevity of the design.