Functional and graphical design a professional report area (data visualisation dashboard) for a comparison site

We need to evolve the "report" that can be generated from the data shown on our website. The current capability is explained here: [login to view URL] you can generate a live one by going to [login to view URL] and click "create report" Goal is to adopt a flexible data visualization /dashboard / data analytics platform - that allows our users to view key results, charts and custom analysis online (rendered/view on website) and print/export those (with filter and customisation options like specifying which sections to print, add a custom header, whether to include all table details or not, with watermark or not etc ). It should be "easy" to expand the views going forward. Note that the data resides in a custom database (not Wordpress or other CMS) and is generated with a custom php page (bootstrap based). First phase would be to implement the new report platform on a test server and deliver the "current" report with the new platform (at least with equivalent capabilities and improved design) - allow for the charts / results to be viewed on website (e.g. in full page "dashboard", not just as "print") - must allow for print / export to pdf / with customizable header and selectable sections Second phase will be to add various views (to be specified) and a "sponsorship" section that can be optionally removed. Your suggestion what framework to use for this will be important for our decision - please tell us why you suggest whatever you suggest. Thanks!