None of the cooktops are electrically connected in the showrooms, so you can't actually test them to see how they operate in the store before you buy. The first cooktop delivered didn't work properly out of the box. The second unit is questionable. Using the magnetic knob to control the burner is totally erratic. When you rotate it there is usually a delay before the unit responds, and then may jump between settings.  The alarm beep on the timer is so quiet, you can't hear it even if having a normal conversation with someone, or doing other work.  Is this as designed?

On the plus side, having five burners comes in handy.  The two burner sync is handy, and the pan size and simmer controls are very useful.  The surface cleans up easily.