Hi guys, I have the opportunity to purchase one of these and was wondering which one I should go for.

The standard 45mm Fifty Fathoms is the classic black one. Quite large, wears abit like a Panerai but short lugs help.

The Titanium Blue 45mm FF that was released last year with the see through back and also lighter weight.

The 40mm Mil-spec which does not have the 5 day PR movement.

Let me know your thoughts!