I bought my son the new Fitbit Ace and am so impressed with it, I feel inspired to get a Fitbit for myself. I’m looking to get fitter and healthier (have become overweight and lazy over the last couple of years 😳) but I don’t want to spend a fortune. Was thinking of a Fitbit to link to the app that has my son’s on. What do you think are the most important features and which Fitbit would you recommend?