It's been years since I wore the 1403s, but that was the model I used before switching to the Blizzards. From what I remember, the forefoots were similar, though the Blizzard has more comfortable straps, but the heel cup on the 1403s didn't fit right. It never felt tremendously loose or anything, but apparently it was just loose enough to cause pain. I also feel more stable in the Blizzards because of the heel placement.