That entirely depends on your budget, the reason you are buying the light - including the size of the area you are trying to treat, the benefit you are seeking and how much time you have to spend on treating yourself. The sizes range from the Rouge Tabletop G3 which is geared towards targeted treatment, Rouge Pro G3 which is considered half body, the Rouge Max G3 which is for full body with narrower width and the full body Rouge Ultimate which covers wider frames -  we cover all your needs. We even have Rouge Nano which is portable for when you are on travel. Feel free to reach out to us to help determine which is the best choice for you!