Neither of the mentioned products are traditional glass, as stated they are ceramic with some slightly different properties depending on the trade name. The etching that occurs from Anthracite fly ash eventually claims both products and causes crazing and eventual cracking. Always allow the glass to cool before applying any type of cleaning agent, always use a product meant for the ceramic such as ceramic stove top cleaner and steer clear of any common house hold glass cleaners that contain ammonia.
We do offer a piece of laser cut steel that perfectly replaces the glass for those that want to never have to replace it again, but alas that warming glow that reflects on the walls is missing when the glass is replaced with steel.
As Dave stated we are trying out the other product just to see if the buzz is correct, we will keep you posted as we get feedback.