The most comfortable watch I've ever worn (for my wrist size) is a Submariner 116610LN. I have a 126610LN and although it's literally 1mm larger, it just doesn't sit on my wrist like a 116610LN. I have an Omega Planet Ocean with a steel strap and it's like wearing a brick on my wrist.
So choose wisely for your body shape and size. I'm 5'9".