I found Superior Thread on a half off sale at Joann's, of all places, online. I have never seen it in the store itself. I had used King Tut before and absolutely loved it, so was able to stock up. I also found a Superior Masterpiece thread, so decided to try it. It leaves a lovely stitch, but my older Bernina doesn't seem to like it very well (Masterpiece). I have had some trouble with the thread breaking in both the top and bobbin. I realize this post doesn't tell you anything about the service from those 2 companies, but I would recommend King Tut thread to anyone. I am also going to check out the Superior website for info and newsletter.