I'd advise some caution with Nevron. I have extensive experience as I've been using them for all of my charting in an Enterprise BI application for the past 5 years.
There is plenty to like about Nevron:
- the charts look great
- the API is pretty good
- there are lots of chart types
- the price is right (they are cheaper than lots of their competitors such as Dundas)
- tech support is pretty good, you can generally mail the developers directly and get a good response from them. They are more than happy to add new chart types for you if you are prepared give some input to the the requirements. They built a great Venn Diagram component for me :)
All good so far? The killer for me has to be pain that is involved when new versions of the suite are release. We use Nevron for our Charts and Infragistics for our UI components. I can generally upgrade our application to a new version of Infragistics in half a day. A new Nevron upgrade can take anything up to 4 weeks.
They have changed their object model many times and have a track record of breaking both interface compatibility and changing the way that you do things. I have a feeling of dread every time I have to preform a Nevron upgrade...
Another word of warning, their handling of axes labelling leaves alot to be desired. I've spent alot of time trying to get axes labels to look good. Support for this has improved over the last few releases but it still isn't there yet.
