To begin with I would like to say that both of these watches are great, but let’s be a bit harsh😀
1) PP
- inconvenient calendar
- thick
- design not for everyone
- robustness of the movement is quite questionable
- expensive
2) ALS
- no applied indices, as a result boring dial
- too classical case finishing
- doesn’t match with casual clothing
What watch is better? Hands down ALS by a mile. It is almost the perfect watch. But if your style is casual it would look like smth alien.
Keeping in mind you have a wonderful 5170 I would suggest buying smth different.