I currently use this machine in the gym that my work provides for us. I have fallen in love with this machine and will pick it over any of the other ellipticals or treadmills that are available. It is an easy yet sturdy machine to use and I get a great workout. I leave feeling like I have accomplished something good and it helps brighten my day. Performance It is a very sturdy machine to use. I use it between 30 minutes to an hour a day and get an excellent work out from it. I love being able to look at the different areas of info I am achieving while using the machine. Such as calories burned, strides per minute, strides currently taken, mileage, length of each section, etc. It has spurred me to do better and better each time I use the machine. Comfort The comfort level on this is great. You can hold on to the rails for stability and it allows you to do that at different positions. Ease of Use This machine is so easy to use. The choices of courses is great and it walks you through each area of information you need to input. Durability The machine is a sturdy one. The one I use is currently used by state employees from 17 different floors. It has held up well and is in excellent condition.