Its user interface is great. It's easy to use and easy to administer, and it's versatile. It's not as complex as a lot of the other ones. I've used it at six different companies, and to me, it's the most versatile, easy to use, and dependable. I've had nothing but good luck with it. It's easily the best of the breed. It's the best scheduler for ease of use. I've used 10 of them at least, and it's by far the easiest.