I've been using the c&c thread in the Brother machine and have never had any problems with it (it has a lot of lint on it, though). I just purchased a Pfaff and was told not to use c&c in it because of the lint, so bought some mettler thread - but that is soo expensive - paid $6 for a small spool and thurned out it was polyster. Worked fine, but don't like the price. Ordered some thread at Connecting Threads - really like the price $2.50 for 1200 yds of thread! I just started sewing with it and I'll see how it goes.