We had previously purchased a panasonic counter top microwave and tried putting it into the cabinet.  It didn't last much past the 12 month warranty.  So I purchased this "built in" model, which was delivered on time and in good condition.  It was easy to install, looks great in my newly remodeled kitchen with other stainless steel appliances and is SO quiet!  It fits perfectly in our 24" cabinet space.  If I was going to find something to critique, it would be the SUMMIT logo in white letters on the glass.  Wish I could peel that off somehow. I don't need to advertise their product in my kitchen.  Am very happy so far with this product.  I'll let you know if it lasts :)