I got the PAM first because that's the watch that lead me to the watch 'bug'. Love the size, simplicity, the sandwich dial, the case and the unlimited options for straps. Can't stop looking at the watch but couldn't tell the time when asked what time is it. It just grew on me everytime I look at it
After a year or so, I had a chance to buy another watch based on my wifey's approval. And from there, I had a Rolex Sub C in my radar as I was looking for a versatile yet different to the PAM I had earlier. Choosing between a Sub C and a Sub C Date is another story tho.
I have to admit, the Sub C did not grew so much on me when I wore it on alternate weekends until after a few months, I kinda admire the classic look and the thinnest of the case. Guess that's what makes a Sub, a Sub. Definitely a dressier sports watch when compare to the PAM.
As of now, I still love my PAM but the Sub C has more wrist time as I find it more versatile and suits my working environment better.
Hope I don't confuse you further with my personal story for both watch.
At the end of the day, I'm sure you'll get both. But which to get first, depends on your preference what you wanna fill up in your collection first.
Good luck in your search.