@johnbishop I'm going to purchase a Sanddune Stepper, John. I figure, what's to lose? (Except the purchase price. 🙂 ) What I like about what I see of the Sanddune Stepper is that it's a straightforward device, something like my ToePro (which I believe is hidden behind my sofa): no batteries required, nothing to plug in, no built-in algorithms, no headset needed to be worn. Straightforward devices like what the Sanddune Stepper appears to be have high appeal for me. You them, They arrive. You set them down on the floor, and from that point on, the devices just look up at you and say, "Well, come on! You paid good money for me. It's all up to you now." / Thank, John for you input! –Ray (@ray666)