Great thread for longarming
As a newcomer to longarming, I've been using Superior 60 wt thread for both top and bobbin. This trio of white, gray, and blue Aurifil cotton 50 wt works better in my bobbin and produces less lint, too. The colors are perfect for my usual backing colors. I'm still working through the spools doing practice quilts, but soon I will be trying out the blue, too. The Aurifil spools do fine unspooling for winding my bobbin using the regular cone holders on my longarm, no need to buy a spool holder.