The thread companies that were mentioned are huge companies. CT is a small operation in comparison and they are not a manufacturer. They are a .com business. They sell thread, not manufacture it. I like CT poly thread, just not the spools. I find that the thread on the spools take up way too much room in the seams. I was told by the owner of one of the major thread companies that the spools are the same as Star. Like I said, its not a bad thing, just not the quality I want.