It looks like the Reebok treadmills are very user friendly. A lot of them have iFit SD Interactive, which is a card that has a workout program created by a certified personal trainer. The card plugs directly into the treadmill, changing the settings according to the workout, while the voice of a trainer coaches you. The treadmills that don't have this feature have lit displays that have several options for different types of workouts. You can enter your weight and it keeps track of your speed, time, distance, pace, heart rate, calories burned and even carbs burned.