I have been using pretty much all Danville, I use 210, 140, and 70. I have never had any break on me, which actually surprised me, as I use it pretty heavy handedly. So either I have just been lucky with the thread, or possibly there is another reason yours is breaking? Bad roll? Bad bobbin? Catching thread on hook point? I am not suggesting you are doing something wrong, just shooting some ideas out there. Is it just one roll you are having trouble with?