bbuxton unfortunately you are right. Sketchup and Rhino are the programs that people are using.
FormZ has a few great tools, best in industry definitely. Push n Pull tool on solids, offset tools with insert option, autogrid with lock option, fast drag n drop method with materials, robust extended tool and ability to copy paste topologies.
I love Rhino but in Rhino you have to use three or four commands to achieve the same than in FormZ. And the handling of materials is clumsy in Rhino.
Sketchup is a different story. Modelling method is annoying, but it is very fast and OpenGL mode is nice with bright colours, crisp shadows and clean lines. And you can export crips views to Illustrator. Now I have to export FZ models to SU if I need nice concept graphics or "toon" rendering.
Now Rhino is my main modelling program because you can link both FZ (step or dwg) and SU (native) files into it as blocks. And the main model will update constantly. The disadvantage is the poor material management in Rhino.
FormZ could easily do all the things mentioned above, but now there is too many bugs, bad export import plugins, UI problems and so on.
Lets hope FormZ 9 has new clean code, nice UI and robust import export plugins.