You should include ArcadiaCharts: http:www.arcadiacharts.com as well. It's free for non-commercial and is pretty easy to use. I like its look a lot.
What about including FusionCharts.com ? Provider of interactive JavaScript (HTML5) chart application components.
Good Start
It might be useful to explain what some of the categories mean
This is something I have spent quite a bit of time researching myself
You should include ArcadiaCharts: http:www.arcadiacharts.com as well. It's free for non-commercial and is pretty easy to use. I like its look a lot.