In general you are shopping for the shape of the toe box. If the toe box is more pointed toward the center of the shoe as viewed from above you'll likely get a trimmer, more tailored fit.

Morton's Foot (where your toe next to your big toe is longer than your big toe) is pretty common so you'd think some shoe designers would build for this specifically.

Have you tried Newton?

---

Tom Demerly
The Tri Shop.com