Add Graphs to Existing Reports, Improve Design

Hi, I have an existing project that has some reports already that use PHP Datatables. I'd like to make the reports look more "professional" and add graphs with the tables. Some of the reports are: 1) Orders by Date 2) Orders By Business 3) Order Frequency 4) Orders by Amount/Cost 5) All Customers 6) All Leads etc Once I accept you bid I will show you the existing project and explain all the reports. Please recommend a graphing application to use (such as Google graphs or Fusion Charts). Please see the screenshots of existing reports.