GANTT Chart Creation

Hi,

I'm trying to find the best solution/visualization for creating a Gantt Chart. The following is some of the requirements for creating this multi-year Gantt Chart. 

The ability to create the Gantt Chart based on different timelines (i.e. Year, QTR, Month). 

To be able to assign colors to different Tasks and Milestones

The ability to show the Starting and Ending Date as a part of Gantt Chart Bars

To be able to Export to PDF

Please let me know about your recommendations. 

Thanks,