Hi gymguy,
There are two main suppliers Powerplate and Vibrogym, there products are both technically similar, im sure they would happily differentiate!! there seems to be two ranges a home range which is circa £3k and a professional @ £6k!!! they are 2 different sizes, I cant comment on there functionality as i havent tried one yet, the only reason I know this is because ive just been looking at them on a gym shop.... heres the link http://www.home-gym-equipment.co.uk/Strength/VibrationTraining/index.htm
Happy studying!!
caz