I had an earlier version of Unfold 3D. I bought into the idea that a tool totally dedicated to a task just had to be good. Well, Unfold 3D is a good tool, no mistake. However, for just a little more I was able to get modo, which is a complete modeling solution, 3D painting and sculpting, rendering and animation package. It turns out that modo's UV tools are almost as good as Unfold 3D's (better in some respects and not quite as good in others). For the slight difference, it was a much better investment to get modo.

Frankly, I cannot see spending hundreds of dollars just to unwrap a model. Most of the high-end modeling packages have excellent unwrapping solutions as it is. Most of the people I know that work in the industry are not using tools like Unfold 3D. Obviously someone is using the tool or else they would not still be in business, though.