Oh! This is sadly a bit too late as I've recently switched from Highcharts to Flot because I did not want to buy the so-expensive commercial license for Highcharts.
I like how minimalistic the graphs look. Though, missing the pie chart.
I might just switch to this if I see that it's going somewhere ;)
Hi - one of the authors here. We've had the pie chart request before. We will probably never implement pie charts. I agree that there are cognitive issues with them, and given that at least for our immediate needs there are better alternatives.
I really wish that there were canvas (non-svg) alternatives to flot, with many graphing features. Flot's performance for frequently updating graphs is awesome.
I like how minimalistic the graphs look. Though, missing the pie chart.
I might just switch to this if I see that it's going somewhere ;)