So which exercise machine is better: the treadmill or the rounded trainer? While treadmills are still the #1 piece of domestic exercise equipment, rounded trainers are quickly catching up. This leaves galore people wondering 'Should I buy an elliptical trainer or a treadmill?' While there are definite differences between the two, it really boils down to you - the buyer. This article will lay down the benefits of both the treadmill and the rounded so you can make an wise to decision and choose the best machine for you. Treadmill Benefits: · Great for runners, walkers and joggers: