Reviews for many models of Chi Machines are vast in their overall satisfaction. After finding a comprehensive review online, I settled on this model and could not be happier. After using for two weeks, the machine offers consistent relief of muscle tension and provides a relaxing experience especially when combined with soothing music or, better still, a powerful guided mediation. The device does squeak a bit on occasion, but slight adjustments to foot placement solve the problem easily. So, lay back, relax, and enjoy all the benefits this wonderful machine has to offer...I know I do!