Re: built in microwaves
We were renting an apartment before we bought this home and yes the rim on that microwave got cracked too. Although we were not using it , because it was small and did not have rotating base inside. So we were using our own bigger and better microwave. But the heat from the stoves below made it crack. When it got cracked we notified the management of the Apartment complex to make sure that we do not end up paying for a new microwave when we leave.
The home we bought about three years ago came with what they call gourmet kitchen. All appliances are GE profile. In fact my wife fell in love with this house from the lot because of the kitchen.