need a paid 3rd party tool for graphs in .net
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I am looking for a third party software for graphs to be integrated with my C#.net project build in visual studio 2010.
My requirements for the graphs is a bit extensive and need the graphs to be of various type and can be easily customized with many different range of data to process.
I am looking for a paid software that can help me in this.
Extra points if the s/w is easy to implement.

Please share your views on the best s/w in the market that can help me do so. 