I like that it's very easy to use. It has all of the features you would expect from an online billing software. The customer service is also top notch. They are always willing to help out with any questions or issues that arise. There really isn't anything about this product that I dislike. I highly recommend this software to anyone looking for a great online billing solution. We have used several different online billing solutions over the years and the customer service at Design Soft is second to none. We were able to implement Design Soft within a week and we haven't looked back since.