I use the machine quilting thread from C&C and it is strong. However, it is incredibly linty. I am amazed at the balls of lint I clean out of my Featherweight. I have to keep the feed dog area very clean or the amount of lint causes it to skip stitches.
I will not therefore use it in my Bernina. It is inexpensive and a good alternative. I was having problems with the new XP version of Dual Duty with it shredding and breaking.