I use Bryce for landscapes and architectural rendering. I also use Rhino and Carrara for my 3D needs, with these apps together, I can do just about anything I want. Bryce is definately a great program, it has it's drawbacks, but for the money it's an incredible piece of software. It can do many amazing things, and at the same time there many things it can't even attempt. For anyone needing a decent mainstream modeller to go with Bryce, Amapi 4.15 is a free download, and it's definately worth picking up if you need a modeller and can't spend any money.