This one seems to work just fine, and it might make you feel pretty good. You just sit on it, press the buttons on the control unit, and it does the work for you. It includes heating, which you can turn on or off. If you're interested, call me, at (6 zero 7) 9 5 3 -- 0 seven 2 3. I don't answer craigslist email, and my line doesn’t take texts. -Dave