Nagios XI it is
For those who've been using the community (i.e., free) version of Nagios, I'd encourage them to try Nagios XI, the commercial version. It comes with a 60-day evaluation license, and there are frequent 1/2-hour webinars to cover its many features and enhancements (reports, dashboards, etc., etc.) The support forums are great too. They include tech experts who really care about the user community and making the product solve their needs. I vote for Nagios XI!