Well if it were me and I was going to be looking at new tools for BI I'd look at Sisence, IBMs Cognos Analytics, Tableau, Looker, Domo or even Microsoft's Power BI.  I would not have normally included Tableau but they seem to be making a come back and investing in what users…

I would go with Pentaho.   BOARD is not around enough companies to hear about how good or bad it is (most big companies with a lot of users like that do not use it).  Birst has some issues but has some success with smaller user bases.