Pam 510 or Pam 422 same price - which one would you pick.

[supra8903]

Hello. I have a chance to pick up a new panerai for my 30th birthday.
I was going to pull the trigger on a new 510, but my AD just took in a trade on a pam00422, and I can grab it for the same cost as the 510.

422 is complete with triple box( inner black box a bit banged up) and war entry dated 4/14

What would you do?

I'm 6ft 2in, and a 7.75in wrist, so 47mm should be ok.

I like the 8 day power reserve, but I like the 1950s case.

Any advise would be good.