Let’s start by stating that the dimensions of both models are exactly the same. The Pro model has been designed for Health Clubs and Studios where the BOSU Balance Trainer can expect a high amount of use. Commercial models are designed for 24 hours a day use, whereas the home models are designed for 2 hours a day use. The blue dome on the pro model is manufactured from a more durable material than that of the home model. The pro model also has a metallic blue dome whereas the home model has a light blue dome. The pro model has a grey base with a large single rubber foot underneath the unit to stop it from sliding on studio floors under lateral loads. The home model has a black base with multiple small rubber feet which stop the unit from sliding under lateral loads. If you are a fitness professional, fitness facility or just demand the highest quality, then it is recommended that you go or the commercial pro model. If you simply want to work out at home and follow the workouts on the DVD provided, then the home model will be fine for you.