Same exact size as you. I've already posted similar images, here and elsewhere, and the responses have been the same as yours: The 38 looks better, but you could pull of the 42. Personally, I think the 42 looks big on me. I have Pebble Steel, about the same size as the 42, and have always felt it to be too big.
I was 80% sure about the 38mm, then spent some time at the Apple Store playing with the demo models, which are all 42mm. After several minutes, I turned to the display case and looked at the 38mm watches. The screen was noticeably smaller. Now I'm only 70% sure about the 38mm. 😀
It's a dilemma, believe me I know. There is one other factor to consider: comfort! The 38mm will be less obtrusive, is a bit lighter and won't stick out as much as the 42mm. You probably won't bang it as much either. This is important, as you will probably be wearing the Watch a LOT during the day.