I'm a 73 year old male weightlifter, and I weigh 230 lbs. I bought this model because I like to keep things simple, and this model is perfect for me. I walk on it at least 12 miles a week at an elevation for 5 - 7, at about 2.8 pace. I've owned it for about 3 years without having any reliability issues at all. The sales guy I bought it from said I would probably never see him again. He was right. I don't think I'll live long enough to need a replacement. Great product!