The cooktop works great. It makes some weird high pitch noise and heats up extremely fast. These are all normal. It will take some time to get used it. I don't have any complaint about it. There are a major glitch. Many of us already found misalignment of heating elements inside of the cooktop. I had to open the glass top and re-adjust the heating elements. Also, I found some damaged plastic parts of the touch buttons. I made some easy fix on this. Now, the cooktop works great. I think all the damages were made during shipping. Also, I strongly recommend buying an extended warranty. [This review was collected as part of a promotion.]