I forgot to mention that as you learn about thread you also learn about weights of thread 2ply vs 3ply the smaller the number the heavier the thread as in 12 weight Aurafil being a good substitute for embroidery thread 50 weight is what you usually use for piecing 60 weight is very fine 35 - 45 makes nice machine quilting thread. So with each thread is the correct needle to use yes we normally use 75 - 80 sharps or universal some like the microtex needles then your long arm machines go up to a 20 yes 20 since that thread is moving so fast through the eye of that needle. Be sure to learn the correct needle for the thread that you are using. Nice to see all of the thread companies mentioned and I know that there are more depending on what part of the world you are in.