That's a tough one.
I've got both - 42mm PO orange on black rubber. A xmas pressie from the missus Was my daily for ages. Then I recently got a speedy pro moon . It's a beautiful watch. Well balanced, comfortable with a lovely weight. Love the history and quirkiness of having hesalite and manual wind in a world of sapphire and autos/ quartz. Aside from the sentimental reason the only thing that might make me choose the PO over the speedy is the date function. Never realised how much I relied on this until I started wearing the speedy more. But I guess you'd get used to it( and just ask someone with a date watch what the date is :lol: )
For now I'm fortunate that I can keep both. If I had to give one up? .......I really don't know :lol:
Not much help. But there you go. Good luck :lol: