The most helpful feature is that I can complete my forms in one place, which means less time spent at each location (or multiple locations), saving me money! It would be nice if it were possible to store all of your completed forms so you don't have to reenter them into another form again later when needed.
That's ok though - not something we're using right now anyway. InkWrx has been very easy to implement and use through our business process improvement initiative called Next Generation Workflows (NGWP). It allows us to streamline processes and cut down on paperwork while also providing an online survey experience.