CC3 has the best bang for the buck. It takes a while to learn, but honestly, I found it a lot easier to learn than Bryce! As soon as you realize that CC is not a paint program, get used to the CAD concepts, and learn the icons, it is pretty straight forward for most common commands. Heck, I think you can do a simple map on your first day. Mastering takes a good bit of time, but that is true with any program.
I think that you can produce excellent overland maps with the package, far better than Dundjinni, which is small scale oriented.