The trouble with SE should be obvious by looking at the number of posts here.
No one is using it, there is no pool of users to help answer question. There is a news group, but the activity is light. There is no knowlegebase on the SE website. Man, its scary to invest the time learning about a tool like this.
I have been using the free 2-D version, and it has its minor issues, but overall its a fairly easy to use CAD program. But I ran into a problem were text on the part does not show up in the DXF export. I have looked everywhere and can't find the answer and there is really no one to ask.