I've been sewing on a New Home Memory Craft 7500 (now Janome) for 24 years. Never had a minute's trouble until recently....not sewing a consistent stitch. But, I suspect it's some compatible generic bobbins that I purchased. I have 2 Brothers also. But, my MC 7500 is sooooo much quieter than the Brothers. My next purchase will be a Janome, for sure!!