You can use anything on your brother with no issues. On my brothers I have used guterman, mettler, superior, madeira, coats and clark, connecting threads, and sulky none have ever given me any problems. All work well for any project for piecing I use mostly gutterman because it is readily available and I can use coupons at joanns, and its on sale a lot of the time. I hear good things about aurifil and presencia but have yet to try these as my machine works fine with the others and they are cheaper. Maybe one day I will try it for fun. I also hear good things about isacord. There are alot of good threads on the market and brothers aren't picky