I've previously worn the New Balance 406, 407, 440, and 609 models in 10 1/2 4E.  So when I decided to try a pair of MW910's I ordered the same size, and they fit perfectly.  I put them on immediately upon receiving them and went on a hike.  It was a comfortable, smooth, soft ride.  No problems whatsoever.

I saw other reviews claiming that NB shoes today are smaller than the same size was in the past. That was not true in my case.