I was pretty deeply involved with the beta testing of Terraform (T4D) before it was sold to Insydium. I'm looking forward to seeing what they've done with it. Yes the competition is steep in landscape generation tools - DEM Earth, Worldcreator, Gaea, Houdini, etc etc. but to be fair I think T4D has it's niche. It's a lower cost, simpler product that can build 'realistic enough' landscapes quickly and easily. It integrates perfectly with C4D features such as fields and It's very art directable. The one key area it was missing was hydraulic erosion. I'll be interested to see how well the Insydium system works.