Product review (2 stars): Down Draft Overpriced.
The surface does scratch very easily.  MIcro scratches with cotton kitchen towel.  If you happen to get food or water on the hot surface you will struggle getting it clean.  Price is way over what this is worth.  1000.00 for a 400 stove.  I was expecting more.  I know the downdraft system cost more but they are taking advantage of customer with overpricing with this option across the industry in my opinion.  I feel ripped off.

As for the heating performance I am satisfied.  The price is the main complaint.