I have a Janome 6600. I use the foot pedal exclusively. When I FMQ, I set the speed control to a low setting, start out slowly and then depress the pedal all the way. The speed stays consistently at the low speed I set. When I take my foot off the pedal, it stops immediately in the needle-down position. I can't imagine taking my hands off my work to operate the start-stop button. I loved the analogy of using cruise control on an icy road. Perfect comparison, in my opinion.