Hi Doug,

>The main distinguishing features between the two is that ChartFX is an ActiveX version of a .NET control so you need to distribute or ensure your client has the .NET framework version 1.1, whereas TeeChart is just a single OCX file. Also, ChartFX is a lot more expensive.
>

The ChartFX site says this about their COM products:

The 6.2 versions of Chart FX Client Server and Chart FX Internet bring all of the advanced features of our highly renowned Chart FX for .NET in a product specifically designed for COM desktop developers. The Chart FX COM products are 100% C++ and do not require the .NET Framework in any way.

http://www.softwarefx.com/sfxComProducts/

It's nice to have the modern charting products available to COM developers, but like you said, it is expensive!