I like that it is easy to use with no technical knowledge required! It's not perfect but what program can be? The interface has some quirks at first glance which are difficult if you're new as an installer/technician who hasn't used this software before - especially when adding items from other vendors such as ductwork etc (which we have done many times). We've been able solve most problems by sending them through their support team via email however sometimes they just need someone "in house" so its helpful having your own techs using these tools too :) If anyone wants quotes online fast without needing any customer info then go ahead & give EZQT A try!! They will help get all those pesky questions answered quickly once installed ;) Online quoting saves time offsite appointments / waiting around while customers do research themselves instead saving us money for our service calls + paperwork! Also helps ease potential issues regarding billing.