I heard Bosch plugs have a tendency to blow the threads.
Unity all BS aside, I never had a problem with the boschs blowing out the threads, but I did have a problem with their internal compression seal that would blow out after the plugs weren't in there very long
evidenced by the obvious compression tracking leading up the body of the plug.
The first set of NGK's I put in was when I lost the threads in the #3 hole.