Dundjinni is a fine map-making application, but in some ways limiting to how I like to map. I am aware of pro mappers at Gamemasters Syndicate that use Dundjinni as their primary application, combining a ton of map objects as well as use of 3D to create special content for great looking maps.
Often I need use of feathered edged objects containing image fills and various degrees of transparency, which is lacking in using Dundjinni. It was using Dundjinni that actually chased me back to my more familiar Xara Xtreme as a hybrid raster/vector app that could duplicate any feature of Dundjinni and a hundred more options.
I went to Xara, only because I was already familiar with it and hadn't considered it as a map application when I first went alookin'.
But I still use Dundjinni, CC3, Fractal Mapper on occasion - I rely on hand-drawn work and Xara for most everything else.