i concur with the Superior thread link. i love their threads. They have so many applications available. Thread for every need. It is spendy but it goes a long way. I bought 3 spools of the King thread for the queen size quilt i made for my daughter thinking i'd machine quilt it. i ended up hand quilting it with the King thread which did as well or better than the hand quilting Coats and Clark thread. I did machine quilt the borders and it came out lovely. On the website, they talk about not using the rayon threads because they aren't colorfast. They suggest using the new ultra luster polyester threads instead. I just finished a wall hanging using the rayon, so i hope it stays color fast once i wash it before i gift it.