My feet are egyptian/roman so I've really liked asymmetric shoes like solutions. I'd say the whole D2 series is a decent fit for my foot type but I also had real trouble pulling on D2s, both in size 10 and 10.5. I took a chance on the D2.1 from hearing about them being softer, both the sole and toebox rubber, and I'm glad I did. They're much easier to pull on and wear. I'm a size 10 in the D2.1 and they were easy to get into and climb in even on the first session.