My cast is off (yay!) but my foot and leg are still recovering, and pretty sore. I used to walk a lot, and it's hard to keep myself from overdoing it. So I went to a store in Seattle today and asked for a pair of sneakers with tons of padding in the heel. I ended up with a pair of Teva vegan (!!!) sneakers. Here's a link to a pair on zappos:
Teva Romero MT - Technical Terrain Women's Terrain (Heron). Note that this description is dead wrong: "for those that want to look fast even when standing still." However, they do have this: "Encapsulated Shoc Pad™ unit in the heel cup that evenly transfers energy of impact throughout the footbed and away from the heel." They at least work better than my pumas, which have almost no padding at all. I still can't believe I'm wearing shoes this ugly, though.