Yes, I've been using Export to PDF and I like it but I have noticed that the pdf files for the same maps exported using TerraGo are smaller and TerraGo also has some additional functionalities that don't work on pdfs exported using ExportToPDF. The two export options are implementing the GeoPDF specification slighly differently. When I gave my maps to some users they tried to use the TerraGO toolbar in Acrobat and their comment was "this is not a true Geopdf". It would be nice if the TerraGo option was available in Arcpy. Do you think it may be available using ArcObjects?
Thanks,
Ovidio