I own both a pair of RW Iron Rangers as well as a few Aldens. I comfortably wear an 8.5e in both my Iron Rangers and Barrie LWB. I also have a pair of Barrie WT boots in 9D which fit me well. But I think that's because my true size is somewhere between 8.5E and 9D. I think that the Barrie last is a touch wider than the Red Wing lasts.