With a tread belt 18" wide and 50" long, the T3 is a compact treadmill. Therefore, it is not recommended for tall people or fast runners. However, it is recommended for smaller people, walking, and jogging. Its strongest selling point is the Endurance warranty, which is lifetime for everything except labor. That includes everything, not just specific parts like some manufacturers’ warranties do. The importance of this is not to be underestimated. Endurance customer support is also strong. Translation: your treadmill will keep running as long as you do. You might choose Endurance because your highest priority is to workout, instead, perhaps, of having the best treadmill.

The T3i model adds a wireless heart rate monitor for perhaps an additional $200.00.