For dundjinni if you go into their forum and make a post about not getting the download link they can hook you up manually. Dundjinni I find wonderfully easy to make beautiful dungeon level maps and building level. though it can be one heck of a processor pig

CC3 handles maps a totally different way and its way easier on the CPU and makes large scale and city maps wonderfully.

Heres the best way to start into CC3 Map Making Made Easy - YouTube