I have CC3 and DD3 and will be getting CD3 shortly. All the profantasy stuff is fantastic. I also have Dundjinni and it looks great but I haven't used it much.
Be sure to get CSUAC. It works with both.
I use CD3 a lot in combination with Photoshop (you could use gimp). It is great for getting a lot done in a short space of time. Check out my finished maps album link in my sig if you want. But also check out GWs stuff for the mack-daddy samples...might take you a while to get to that level of mastery though
Hi ho, hi ho, it's off to work I go..