Samsung is the best.  The design of the unit is exceptional.  The button is magnetically attached and can be removed for easy cleaning.  I have no problem getting a good sear on my food for a stir-fry because the stove has very good power.  The one thing that is a negative is that the highest power burner is in the middle towards the rear.  It is something you have to get use to because it is a farther reach when cooking with a frying pan but due to it being farther back, the smoke gets sucked up by the vent hood more easily than it would if it was located towards the front of the stove.  All in all I am very satisfied with this stove.  Keep up the good work Samsung!