I recently purchased this treadmill as a replacement to an older NordiTrac treadmill that I will critique in a moment but, to stay on target, this particular treadmill is an excellent choice for those that are interested in REAL changes at a more appropriate price. Performance I love the performance of the ProForm. It has an excellent response time to incline and decline, speed variances and cool down modes. I also love the Gillian Micheals inserts that it comes with that encourage and motivate you to do a bit more. There is also a convenient fan built in right at my chest and neck level that really helps when I get going and start sweating. Comfort The fan is my first accessory for my comfort. The platform is second and is easy to walk/run upon. It does't seem to hurt my shins or my feet so I am happy. Ease of Use User friendly and easy to adjust while running. The buttons are large so, while running, I can change what I need as I need it without hitting other buttons. Durability So far, so good. I havent' had it long enough to guage the durability but I am hoping for a long life as I did with previous treadmills. Design I do wish it had a different layout to the inclines and speeds to where I didn't have to reach over and up to make a change but I have adjusted.