Product review (4 stars): I like the cooktop
I have bought this cooktop 2.5 years ago when we switched  from electric to gas. I still like it very much. It is true that knobs are plastic(not great) and they would melt from the high heat (it  happened to me just a few month after the purchase - one knob melted because i had a big pot on over the high heat). I called the company and they sent me the replacement -  all five knobs. Now i am very careful  not to put the highest heat and pot too close the it.
 Cooktop itself works very well and looks very nice. Cleaning is very easy, much easier then my old glass cooktop - i  don't have to use anything except the water - if it too dirty with the burned food on it - i just let it soak for few minutes and  wipe it off after .