I love this treadmill. I bought it a year ago and have not had one minute's problem with it. What I appreciate most about this treadmill is the cushioned step it gives. I have hip problems and can't use most treadmills. But, this one is so cushioned, I can actually use it. So, if you have joint issues, consider this treadmill. Performance I find the performance to be excellent. It quickly adjusts to changes in speed and incline. Also, the planned workouts, perform very well. Comfort It has a very, very soft step. It is much easier on injured joints than other treadmills.. Ease of Use I read the instructions once, and could easily operate the treadmill. The dashboard is very self explanatory, which makes operating the treadmill easy. I use mostly the basic functions, which are very simple and easy to operate. I have also used the advanced functions on the treadmill and felt the ease of use was very good. Durability Have not encountered a single problem with it. Design The design is good. The dashboard is easy to read. Start/stop buttons, cup holder, etc., are all designed to be reached with ease.