I like how customizable it can be, so you get what fits best for an individual's business needs/requirements - not necessarily just "the next big thing".
We have been testing this in beta mode across several customer sites within my organization since last summer! However there are still some things that could use improvement / better features but overall really digging into their product offerings they've created. If we had more time than money would love to see them expand further with additional modules such as threat intel feeds from other sources or custom alerts which will allow us greater customization when building out reports specific cases etc.. Currently looking primarily towards detecting phishing emails being sent through internal email addresses using various signature schemes i believe? Haven't realized any benefits yet though only tried briefly before going live unfortunately!! Also haven’t heard too many complaints about issues.