Or just have a try with Blender. I use this tool for ~1 Year. Yes, it has a very complex interface at the first times but after some practising you learn to work with it ^^
If you have any questions about baking write me an PM.
cYa Sebastian
Tutorials:
[Blender]Terrain creation ENG/GER
[Blender]Low Poly Tree Modeling
[GIMP]Create a Texture for Terrains
CLICK HERE
