I always use Aurifil to quilt, but sometimes use Connecting Threads to piece. My machines all love them both. The CT thread is a bit lintier, but so what??. I just clean out more. I noted that the Coats&Clark spools don't have much on them anymore. I wouldn't be surprised of Aurifil bought on ebay isn't cheaper than the C&C. I'll write down the amounts on a spool next time I'm in Joann.