In general, you should watch out for used Treadmills which are more over a year classic.
The Bowflex Home Gym comes with a set of flexible rods, and while you use these rods it has 210 pounds of resistance for your exercise. http://Fallingmoon.icu:7010/bfglucienne340/4354treadmills/wiki/Get+From+All+The+Treadmill+And+Move+Into+Nature