I use this system every day in my office at West Virginia University as well as outside of campus during the summer hours to schedule work. This really cuts down time since we can pull up an estimated bill with just one click rather than typing it into our computer manually! The only thing that is missing from this tool that would make me switch companies immediately is online payment. However, other systems don't offer any way around paying by check so switching isn't easy either (unless you know how). As long as there are no new updates being made, or anything changes drastically while using, everything works great! The ease of use of the software is one of my favorite things about it. I can get an estimate in less than 5 minutes with no training required. It's very user friendly with all the options that you need to get an accurate estimate. Nothing really. It's easy to use and has many features that are helpful when doing electrical work. Getting estimates quickly is great. It helps me keep track of what I have done and what I still need to do.