I must agree with (alexcoppo) World-Machine 1.25 is Fantastic and I am already savoring World-Machine 2's soon release. The price is going to be right also. At $40 for WM1 owners you can hardly beat that. Also WM1 exports terrains in about 10 different formats. One being a POV-RAY 16 bit Height Map that you can use in the Terrain Picture function to creat a terrain in Vue and WM2 will Export the Terrains as an Object Mesh if you wish!!!
World-Machine2

I would rather be Politically Incorrect,
Then have Politically Correct-Incorrectness!!!