This is a great buy. It might not be the fanciest one out there but it lasts and can give you a great workout. Performance Never stops or jumps like some treadmills do. I have had mine for about 7 years now and it works like it did when I bought it. Comfort It is as comfortable as any treadmill can be. It is easier than running on concrete. I prefer running on the treadmill than outside. The sidewalk hurts my knees when I run on it, the treadmill offers a little more comfort. Ease of Use Very intuitive, nothing complicated or confusing about it. You just basically set your speed and walk or run at your pace. Their is a safety magnet you pull off if you need it to stop in a hurry. You can wear the cord around your neck and if you fall the magnet comes off and the treadmill stops so you wont get scraped by a moving belt. Durability Mine lasted for 7 years so far and still in great condition. I also use it several times a week for either running or walking. Design It is pretty basic, but great for what it is.