Funny you should post this I am just learning free motion and sometimes things go smooth then I will break 2-3 needles in a short time. For me in truth not sure which need I should be using...my quilt is flannel...the needles I have used are 80/12 and 90/14 both Schmetz I just replace my needle with Xlasse 80/12 Titanium....hope that wasn't a mistake.... I have always liked Schmetz I just ran out and couldn't find any. I hope you have better luck with the breaking of your needles....I do think the cause for me is moving to fast...
Ladybird1957