Highcharts provides 20 different types of [charts](http://www.highcharts.com/docs/chart-and-series-types/chart-types) to choose from, and they make it simple to [combine](http://www.highcharts.com/docs/chart-and-series-types/combining-chart-types) chart types.
Ranked in these QuestionsQuestion Ranking
Pro Lightweight and fast
Chartist is lightweight at only 10KB, resulting in very little impact on load time.
Pro Uses SVG
Pro Offers fully responsive charts
Chartist offers responsive configuration with media queries, which not only resizes the chart but also provides different text and shapes.
Pro No dependencies
Chartist.js has no dependencies, keeping it lightweight and fast to configure.
Pro Excellent browser support
Highcharts supports all modern browsers (including IE6 and up), iOS and Android.
Pro Lots of good examples
The site has a selection of good examples that will help you get started quickly.
Pro Library to support Microsoft .NET
Compatable with .NET framework 4+, can develop graphs from server side for ASP .NETand ASP .NET MVC applications.
Pro Good documentation
Very handy with examples and explanations.
Pro Supports multiple Y axes
Important for trend correlation, eg. comparing number of clicks to sale amounts. Not same scales / units.
Con Very humble feature set
Con Animations only work in modern browsers
Animation support is somewhat limited, with IE not supported at all.
Con The examples are not that great
For instance, example's JsFiddle may get stalled when loading.
Highcharts is not free for commercial projects, with a starting price of US$590 for Single Developer + Maintenance & Support