This decision is torture.
I have 160/165mm wrists. Thinking the 38mm is the better size but the 42mm would JUST FIT my wrist.
Been using the Moto 360 for a guide which looks ok on me. The 42mm Apple Watch is smaller than the 360 so thinking I could be ok.
SOMEONE DECIDED FOR ME
I'm 165mm wrist also. Here's the thing, yes we could pull off the 42mm without a problem but it will look a bit nerdy on the wrist because it is a rectangular black screen.
The 38mm would look much better. So you have to decide, do you want something that looks good and appropriate for your wrist size or a big black rectangle strapped to your wrist.