I have been training clients on a Power Tower for about 3 years. As Karin mentions, it’s a versatile piece of equipment, readily adaptable for a variety of clients. If your budget allows, you may want to consider the Power Tower since you plan to train clients. The Power Tower is considered a commercial grade piece of equipment, it will be more durable and functionally easier to use. Since the Total Gym XLS is designed for home use, the warranty may be voided if used in a commercial setting (for training clients,i.e. business use). Good Luck!