I have enjoyed my manual treadmill for years now. It has made such a difference in my energy level and stamina. Performance Effective, treadmill facilitates the motion of walking which improves my overall health. If you maintain your treadmill as per the guide in the owners manual there should be only minor types of repairs. The treadmill is easy to store and folds up well. I am able to get a high performance workout! Comfort for the most part it does provide comfort while walking. I wish the bars for your hands were lower so my are wouldn't have pain. The height bothers my injured rotator cuff. Ease of Use Oh my goodness! What a dream! Just get on it and start walking. You can walk as slow or fast as you want to. Durability It is sturdy well built and the belt stays where it suppose to be without slippage. Design It is what it is, a treadmill and a piece of exercise equipment. I don't know how you can make it more attractive. The functionality needs improvement in the area of the from had bars.