The elliptical allows for less stress on the joints and it also gives you an upper-body workout. But, if you don't have joint-related issues, maybe the treadmill will be a good option. I kind of agree that a treadmill is a more vigorous workout. Also, if youre a runner, and you run outdoors, the elliptical might be a great crosstrainer. You would then, be getting upper and lower body workouts. Crosstraining is a plus.