I love Madeira threads! I have a great number of them in different colors. I also like sulky threads that are 40wt or better. But then as long as the thread holds without breakage that is what is most important to me. I went on a thread bing a few years ago and and I tons of unopened threads. One I am learning to be up there with Madeira. However one that I am using right now, Robinson-Anton, is also a great thread.