It's pretty easy to use, very powerful for creating charts with multiple data series and interactivity features are well integrated into this tool. I don't like how some tools tend to be too complex in terms of setting up graphs from scratch so it can sometimes take time before someone gets used to using them properly (it takes practice). Also there isn't much documentation out there explaining what each option does but once they do get familiarised then its fine though! We have been able to build interactive dashboard screens which give our customers real insight into their business performance allowing us to make decisions quickly without having to rely solely on gut instinct.