Watches are always very personal.
Every one you listed is a winner so the only one that you should buy is the one that as they say "sings to you".
Why do I chose the the Zero "0" because it expresses the essence of what Panerai is - Simple Beauty - Made in the past for the future. The zero is that, a simple straight forward watch with the single purpose of telling time. Granted you are looking at a tuna can but it will bring a smile to your face each time you do.
Any of the more complex models will be equally as an option so strap them on and listen.
Bill