I bought this five top while doing a complete kitchen remodel.  Initially I had some problems with the middle (main burner) lighting.  Plus the flame was not coming out even.  Technician came out, made a couple of adjustments and it worked fine.

You have to be really careful.  I clean mine after every use.  I've already noticed two large scratches.  I only use wooden or plastic utensils while cooking.  I'm really not sure how it scratched so easy.