I can't be the only one thinking the 42mm would look ridiculous on some (even a male's) wrists?
Take this as an example:
Image
But then the 38mm can look a little small:
Image
Just depends on your wrist size. There's no right or wrong nor male or female size, just what works for you.
Personally, I'm going to try both on before preordering. At 185mm, I think I could probably wear either. Leaning towards 38mm at the moment.
The 42mm doesn't look ridiculous at all in that photo.