If active development is a concern, you may want to consider ZingChart (http://www.zingchart.com http://www.zingchart.com ) They release new builds on a quarter

If active development is a concern, you may want to consider ZingChart (http://www.zingchart.com http://www.zingchart.com ) They release new builds on a quarterly basis. The support is pretty responsive, too.