We are using these in our bar area in the basement. They will only be used a few times a each year. 
People mentioned water spots. I put them in the dishwasher and they came out almost spotless. However, I can tell they are going to be easily scratched. 
They are a bit iridescent. I wouldn’t consider them flat black. 
They are perfect for what we will use them for. I don’t think I would purchase them for everyday use. Not bad for the money.