My favorite features of Avontus Quantify are the easy billing and customer and job set up, and the link with QuickBooks. I got started with the system within a week. This is my sixth rental software package in the 15 years I have been a rental manager and Quantify has been easy to use compared with others. I use it every day to do rental delivery tickets and invoicing. Avontus’ support team has always responded within one day with answers to my questions. I would recommend Quantify to others because of the QuickBooks link up and because it’s easy to learn.