To all my quilting buddies, do you have a preference as to what brand, type, or weight of thread you use for machine quilting? I use 100% cotton Gutterman for piecing and recently bought some Signature cotton for quilting but I am not really happy with it. It is 40 weight. The price is definitely right but the quality seems to be lacking. Has anyone tried King Tut? I have always used all cotton because that seems to make sense to me since the fabric and batting are 100% cotton, but a lot of people use a poly blend and are happy with it.