The best feature of this system for me personally was it's ability to file state returns in multiple states at once! I also really enjoy how easy it is to use and navigate through as well as its user friendly interface. It can be very difficult to find certain features or functions if you are not familiar with them so definitely take your time learning this product. There isn't much else I dislike about this product but some things could have been made a little easier to learn such as creating forms/reports. This has been helpful in keeping track of my business' real estate taxes over several years.