I didn't realize that stand alone embroidery machines had different speeds. Neither of my two do that I am aware of. I have a Bernina Deco the original one and a Brother PE780D. I like to have a seperate sewing and embroidery machine so that I can do work on both at the same time. When I have trouble with thread breaking it is usually because it gets hung up while feeding. I prefer being able to use a spool of thread that is upright but my Brother feeds with the thread horizantal.