What other BI platforms have you used? We're looking to build out our BI infrastructure as a service for our customers and are currently testing google data studio but have looked into Sisense + Looker.
if you are doing customer reporting, sooner or later you will need these two priority things ( more so than charting features)
1. Delegated authentication ( think Okta)
2. Fine-grained row-level security to slice the same data in the report based on authorization.
We have had good experience with Tableau but had to do some custom Rest API programming for #1 .. Feel free to PM
You should check out Holistics.io if you're disappointed with all 3 options. A balance between drag-and-drop for business users and SQL for data analysts, this is done through a SQL-based data modeling layer.
We have had good experience with Tableau but had to do some custom Rest API programming for #1 .. Feel free to PM