Has anyone used the self threading needles to bury the ends of the thread when doing FMQ? I know that's the correct way to do it but you can also anchor the stitch by backstitching over the end. I've always backstitched because it's just easier and it looked alright. This time it doesn't look alright doing it that way and in fact looks really sloppy. I'm using the thread that has different shades of blue on one spool (for the life of me I can't think of the name of the thread) since I really wanted it to show up and doing the backstitching is making my quilt look so sloppy! I'm certain I'll be ripping out all of the quilting I've already done. So....has anyone used the self threading needles for the purpose of burying the knot in the layers of the quilt? If so what did you think about them? Is it worth spending the money on them?