Basic Engineering Specifications Soft / Hard Settings (how high the plate travels in each vibration) 25 vibrations per second - 60 vibrations per second Quality Home Vibe = 77kg. Max load = 158kg Quality Pro Vibe = 102kg. Max load = 226kg Quality Commercial Vibes = 158kg. Max load = 226kg Other differences in construction are in such things as platform size for a larger workout area. The oversized Commercial machines are designed for Gym use. All other questions can be answered by our sales representatives. * These machines have been reviewed by Lloyd Shaw, Chairman of the I.V.T.R.B. the consumer advocate group that regulates the industry. The programs given with these machines will also follow the guidelines given by the I.V.T.R.B. Articles relating to Vibration Training, its safe use and theory can be found at www.vibrationtraining.net Questions can also be asked on this site by anyone. This is a non-marketing site that can be used to gain honest advice from other consumers, designers and studio owners. Email info@quality-vibes.com Phone Mike Hair   0064 27 2576908 Quality Commercial Vibes NZ$25,000 + taxes if applicable Quality Pro Vibe NZ$19,900 + taxes if applicable Quality Home Vibe NZ$9,900 + taxes if applicable 5 year warranty on all models