I like how easy it is to use, and how much flexibility there is in terms of customizing your own rules/logic as needed (via API). Very flexible software - can handle anything from simple point-of sale transactions all the way up through complex inventory management systems. The UI could be better polished; sometimes it's difficult when using an interface designed for desktop computers to navigate around without multiple clicks or mouse movements. We are solving several problems at once here by tracking our financials, internal stock control processes, supplier relationships, etc., but mostly we're trying get more visibility into what products make money vs those which don't.