Having scrutinized the market thoroughly, and tested what is out there of components that will let us generate PowerPoint charts for our .NET solution, it is clear that Aspose.Slides for .NET is the only one that is both completely stable, and has the functionality to save us from having to spend hundreds of hours fighting the Open XML SDK. The alternative providers claim to have the same rich functionality, but just try something as simple as linking a connector to a shape. Only Aspose will let us actually do it. Aspose’s documentation is high quality, examples are good, and the forums are superior.