The ease of creating custom fields, filters & reports! There are so many ways to customize this tool that it truly becomes your own database with its inbuilt functions (e.g., auto email reminders). It would be nice if there was an option to export data as csv or excel files instead just pdfs which don't work very well when trying to create graphs/charts later down the line. Also not sure how easy they make importing CSV's into their software but I'd suggest taking time out at first until you get familiar enough woth all features available within churchcrm before embarking upon any major project like large scale membership renewal etc. Having everything under one roof makes life easier than having multiple databases spread across various departments such as finance - marketing.