I purchased this Pain Pod after extensive research into units and choosing Pain Pod was the most obvious decision but also my Physiotherapist was actually taken by surprise the functions this unit has. I can testify I suffer from Chronic Pain and this unit does elevate pain even thou in my case it's for periods of 5-6 hrs at a time but this gives me the chance to reduce my opiates I take for my Chronic Pain. I brought the Gold Package is it suited all my areas of pain, it's comes with economy pads but I will be buying the bulk pads in the premium range with the rectangle and square shaped ones as you do get a longer life period with these. I also have the belt and I use a tissue to place water on the area you are treating to get the best effect. Overall Pain Pod out weighs other brands by a long way and my Physiotherapist will reccommed this unit to some of his patients. Many Thanks Pain Pod in this remarkable unit. Thanks Mark