I find the Milgauss oddly pretty, in an understated, purposeful kind of way. The lack of a bezel makes it a but more subtle, and unless you get the green glass, there's nothing but the little detail of the second hand to make it at all unusual.
As a steel dress watch that's rugged (and anti- magnetic!), it seems like a pretty good option.
The Milgauss is an interesting piece (and very rare for a Rolex), but the second hand and the color of the markers have always thrown me off.
I was thinking of staying with the 36mm. I have a 6.5 inch wrist and to me, the watch is almost too simple for it to look good at 39mm (don't know if that makes sense)
Vote here for the Explorer I. My 114270 is 36mm and I think it's perfect. Just took it with me for a week-long trip to Cancun filled with sun, sea water, sand, chlorinated pool water, sunscreen, two vomiting kids and the watch withstood all that and asked what else I could throw at it. Not a single ding or blemish on it that couldn't be washed off with soap and water at the end of a long day. Love it.
Yeah 36mm is a good size to me, and both the Explorer and Datejust are that size. I feel both can take that sort of abuse, but some days I feel I would prefer the slightly dressier appearance of the Datejust, and the other days I feel like going with the Explorer 1 as it isn't as ubiquitous as the DJ. Or maybe I should find another piece that speaks to me