I have a spool of every brand of thread sold at quilt shows! I have used them all. I buy the big cones from Connecting Threads for piecing and have lots of the thread sets. I use it for machine quilting. I haven't had a problem with their thread. I have tried a new thread called Glide from Fil Tec, it's very good for machine quilting too. I like a thin thread for the bobbin at least a size 60, I don't care what brand. I try not to buy any thread that has a well known quilters name on it. Any good thread I can get a lifetime supply of I would endorse it too.