I had to buy the first ever Luminor (the first Panerai with that movement was the PAM200 btw) with an in-house movement with 8 days PR, which is a milestone for a reputable horologier, apparently. The problem was that I did..really...travel incessantly, back then, and the GMT funcition was a nightmare. I gave it away with so quick and so gladly, I forgot I ever owned one, in a matter of days
And while the GMT function has been "twicked" in place, I'm ever so glad I don't have to stare at the..fangs..every time I look at the watch. In answer to my own question, I bought a 249 Cali as first PAM because when I saw it, it litterally blew me away.