We chose the TatukGIS DK-ActiveX product earlier this year after determining that no other product even came CLOSE to the DK in terms of features and price! I tried a few other products (there are not many software development components out there which support DGN files!) and none could match the ease of use and features of your DK.
The DK product has allowed me to develop my application extremely quickly and painlessly! Although we will continue to use the DK to implement additional features to our GIS application, our users here in the county government are already extremely pleased with what we have provided them in such a cost-effective manor.
Suffolk County Clerk's Office
Riverhead, New York, USA