I went to Fleet Feet today in Chicago because I was told they they put you on a treadmill and analyze your run. Which they did. They made me a wear a “test shoe”, a Mizuno brand that was very lightweight and relatively bare boned. A laptop sits behind the treadmill and records the motion of your feet directly behind the heel (similar to the perspective in the photo above). Then, you and the sales person watch the video together to figure out how much your ankle pronates or supinates. Most people pronate, and I was told I pronated slightly. They also measure the width and arch of your foot. After the measurement and video, the sales person let me decide between the Mizuno Wave Inspire 6, Brooks Ravenna, and a New Balance 7xx. I also asked to try on a Vibram Five Fingers, but it felt like I was walking on a hard, cheap flip flop. I wound up going home with the Mizuno Wave Inspire 6 because it was a little more cushion-y and the feel was more familar and least invasive. The Ravenna was temping because the flex point was curved quite a bit so the emphasis is on balancing on the balls of your feet as opposed to the heel.