I like that it is very easy to use, intuitively designed for dental professionals of all levels from novice through advanced user! The customer service has been great too - they are always quick with email responses or calls when needed (which you never know until after hours!).
It's not as robust in some areas such as scheduling but we have had no issues getting support help us out where necessary which makes our lives easier by leaps & bounds!! We're using this product at my office so am able get an idea how well others handle their practices/clinics without having them there myself :).