I had one that I used at one time that was a "demo" that allowed you to do I think it was ten drawings. I can't seem to find it on my hard drive right now, but will keep looking.
Most as you have found out aren't worth a crap! Lines are broken and line width is atrocious.
PS: When I was working for a living, I also had good luck (most of the time) asking the client to submit either dxf or dwg files that I could use.