I find that mine fit a hair big. I wear an 11 in the following shoes: Polo Italian made; Moreschi. A 10.5 in: Grenson, Bruno Magli. And a 10 in: Purple Label by Edward Green, Brooks Brothers by Alden. I'd say that the optimal size for my Aldens would be a 10.25. A 10.5 is a hair roomy, and since my left foot is smaller than my right, a 10.5 was just plain big on my left foot. The 10 fits well, and is comfortable, but a 10.25 would have been optimal. For what it's worth, I've found that the Alden has great fit in the heel, so if you are worried about getting too small a shoe, order the "true to size" size -- even if it's a bit roomier in the toe area, I doubt you'll experience much slippage, if at all.