I used this website to choose my treadmill, and I chose the LifeSpan 2500 HRC. I wore out a cheap ProForm treadmill in about 4 years, but this Lifespan treadmill lasted me only a little over three when the electronics board died. Communications with the manufacturer were very responsive, but the fix is very expensive. I liked the product while it still worked, but I cannot give this an "A". When the whole treadmill is going into the trash, it doesn't do much good if the motor is lifetime warranted.