I like how easy it is, once you get used too its very user friendly! It has everything we need in one place which makes our job easier as well!! Nothing so far but if there was anything i would say let them know about your needs when purchasing this software because some things are not obvious at first glance (i think they could make more clear what certain buttons do).
We use chamelon utilities billing system daily now instead off using excel or other programs where bills were manually entered into each month by myself.