Sadly, I had anticipated this would be a fabulous addition to our kitchen, and easier to clean than our previous GE cooktop that had knobs. What I have found is that if you’re cooking several things at once it’s very easy, just by sliding one of the pans over a little too far, to either shut off or turn on another burner.  The lock only works to lock the cooktop in OFF position. You cannot lock it on. When I have a big pot on the stove such as a big pot of soup that is difficult to lift, Just by sliding it  a bit I can inadvertently turn off the heat or turn on the heat on a burner I’m not even using. Definitely not a fan of this cooktop. My husband likes to use the griddle function when he makes breakfast. He also dislikes how easy it is to turn off the burners inadvertently. He actually asked me to look for another one with knobs. The reason we replaced the one with knobs was because one knob could be easily tapped and turned on accidentally and we were afraid we would cause a fire.