I have used the Community Edition and found it to be very powerful. We had decided to not implement it in the company for a very small, but very important reason: the tasks are not built by duration (days or hours). You have a set start and end date. That is it. If my projects are based on duration and not dates, I will also have to "convert" them. Definitely not optimal. If there was an option to input duration and get the end dates, this would be gold for us. Also, if the Community had the barebones for the Kanban board this would have been a 4 star.