UPDATED Sept 2020:
After owning this cooktop for over a year, I have some observations to make.
1) The grates and the iron disks that set over the burners look ugly at this point. They are not a porcelain finish so they discolor very easy from cooking splatters which inevitably happen no matter how careful you are. No amount of cleaning will remove these awful discolorations that are bonded to the surface of the iron. It looks bad and friends will ask why you don't clean your cooktop. You can put them in the dishwasher set to 'sandblaster' mode, but it doesn't help much. You can spray oil over the entire grate in an attempt to get it to look more uniform and it will. But when you cook with it, the heat will turn the grate a dark brownish black from the burnt oil and that is just as bad or worse than what you were trying to hide. Face it, there is no practical solution to this problem.
2) The bright aluminum gas distributors that the iron disks set on also get discolored from food splatters and from cleaning agents that you may spray on your top to clean it. Some splatters come off; some discolor the aluminum. Don't make the mistake of putting them in the dishwasher to clean. The detergent will oxidize the aluminum and then you will be really sorry. Yes, I learned the hard way.
At this point, I bought a cover to hide the cooktop. It used to be spectacular when it was new, but now it is just a seemingly well-used cooktop. It does perform well which is the most important consideration, but it is no longer nice to look at. I have to give it 4 stars since it does serve me well. Would I buy again? Hmm, maybe. I have looked at the other brands and most of them have the very same materials which means they will discolor also. I am kind of missing the porcelain coated grates that my former KitchenAid cooktop had. But this Samsung still works much better. ###
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May 2019. I have now owned and used this Samsung Black Stainless Cooktop for 7days. Here are some details that are not specified:
1) Only the control area is Black Stainless. The burner area is black porcelain. This is a good thing since the porcelain is easy to clean. The Black Stainless is also easy to clean and looks very attractive. BTW, it truly is fingerprint resistant.
2) The instructions recommend not to put the Iron Grates into the dishwasher. They are coated, but not porcelain coated. My previous KitchenAid had porcelain coated iron grates that looked nice but they eventually chipped and became dulled with scratches on top. I like the Samsung grates and find that cleaning them is not difficult but I have not burned cheese on them. Also, the Iron Grates have small, silicone rubber feet with inverted dimples that sit snuggly on the small dimples of the cooktop for a firm footing that keeps them in place without scratching the cooktop. Those wipe clean easily.
3) The burners are quick and easy to disassemble for cleaning. They are just 2pieces each except for the middle burner which is 3pieces due to the combination small/large burner-in-one.
4) The controls work smooth and easy. The control for the middle combination burner has a bit of resistance to turning whenever the transition is reached between just the small burner operating alone and both small & large burners working together. It is nice to know when that point is reached so looking under the pot is not necessary.
5) The Blue LED glow that emits from under a control knob whenever it's respective burner is operating is a great feature. It is quick and easy to determine from a distance if all the burners are off! The knobs are easy to remove for cleaning and the underlying Blue LED assembly within the cooktop is protected by a clear rubber gasket. It looks stunning whenever any burner is on with it's hot blue flame and matching Blue LED lighted control.
6) The burners all operate with a distinct hot blue flame and have more than sufficient BTU output to prepare whatever one may desire. That 19,000BTU middle Power burner will definitely heat a large wok for quickly searing vegetables and meats unlike so many smaller BTU output competitors. If one wants access to home cooking power, this is it. Good job Samsung for making a decently BTU powered cooktop. BTW, I have read some reviewers that complain about gas cooktop grates being too high. Hogwash. It absolutely is not necessary to have the burner flames on the bottom of the pots. A small distance between is ideal unless one is trying to smelt lead in a smelting pot! Not!
7) NOTE that the Wi-Fi module at the back right of the cooktop IS REMOVEABLE! It is a simple matter of removing 4 cooktop corner screws and the cooktop mounted burner screws (2 for each burner except the middle that has 3). These screws are all lightly tightened so they come out easy. Slightly separate the cooktop at the back corner and slip the module out. It has a small connection cable with connector that disconnects at the module. Insert the connector into a Module Blank Cover from the provided accessory pack. This module blank cover is then slightly snapped into place. Easily reassemble being sure to GENTLY tighten the 4 cooktop screws and 11 burner screws. It takes about 5minutes start to finish. When finished the Wi-Fi module is gone and no longer protrudes while the cable and connector are held in-place by the Blank Cover. Pretty simple.
That is the summary. This unit looks great and functions perfectly. I don't use the Wi-Fi feature. I would purchase it again. I also own a Samsung refrigerator and a Samsung phone and a Samsung monitor. I have other electronics by Sony, LG, Onkyo, Apple, etc. My other appliances are by KitchenAid. I chose the Samsung cooktop over the KitchenAid cooktop since I wanted plenty of cooking power and I like black in my kitchen for accent. I also wanted the Blue LED controls for easy determination of whether in operation. Oh, I really like the included non-stick Flat Burner Plate that securely attaches on the grate of the left 2 burners. I used it for pancakes and was impressed with the even cooking results. ###