After 4 years of continuous duty, being dragged thru 3 different cities, and whittling me down 40 pounds, this treadmill has been a trustworthy workhorse. It has been the lifeblood of my fitness routine. I can only be appreciative of its good working functions. This honestly rates a 5 star from me! Oh, only one caveat - it is very heavy and awkward to bring around - especially by a petite 120 lb woman all by herself!