Fitness trackers are all the rage for people who want to get in shape, drop some weight, and stay healthy. Slap one on your wrist, download an app to your iPhone, and start tracking your progress. Simple as that. Unfortunately the process of selecting a fitness band isn't as easy. They aren't cheap and they aren't all created equal. That's why I've taken an in-depth look at the most popular offerings from Fitbit, Jawbone, Nike, and Garmin to help you decide exactly which one is right for you.