The user interface is very clear and easy to understand. Even more so if you know how to use AutoCAD or other CAD software. It has helped us create better and more accurate quotes for our customers. I like that it's available in multiple languages and that it works with all major CAD software packages. It also has some great features such as importing Excel files of your customer information. Nothing really. I think this is a great tool for anyone looking to improve efficiency in quoting and creating sales presentations. We are able to create much more detailed quotes than we would be able to do otherwise due to the ability to see how each component will look once installed.