The Dream Healther is the superior choice:

•    The seesaw or tilting platform simulates the walking action – one hip up, one hip down, making it more functional to the body

•    Morbidly obese (up to 250kg) people are able to use the machine with minimal mechanical and parts wear unlike any other platform

•    Single motor – research by Dr. De Orio, with 5000 participants, compared single motor and dual motor platforms.  He found that 2 motor machines can actually cause detrimental effects, over time, on brain and body synchronisation as the two motors cannot be in 100% synchronicity.  The negative effects included fatigue, muscle weakness, sleep disturbances and even immune system imbalance.