Thank you for all your great replies!

In order to make the maps I'm using Bryce5.5 to create and render the terrain. Photoshop CS5 to make textures, stitch together, edit and touch up the renderings. Then I use Corel Draw X4 to create the symbols and heraldry, and to assemble the final map. The jpg versions of my maps also get a final touch up in Photoshop. I work in a very high resolution 1200dpi to be able to use the results for high quality prints as well as digital use.

I have only covered the Central part of the Flanaess so far, but by the end of the year I will hopefully have done the rest as well.