Product review (4 stars): Great Microwave - highly rated on consumer reports - challenging installation
Once installed, this is a good microwave.  The warranty is a good five year warranty and the microwave is rated highly on CR.  The door and handle seem just a little flimsy, and there is no popcorn button, but other than that a good machine.  The install is challenging.  Locating the exact location of where to drill the screw holes in the upper cabinet is difficult - using the templates provided is not a great method to find these holes.  Using a laser and measuring three times worked, but I was still just a little bit off as the brackets in the back - on the wall, dictate how the microwave will line up underneath.  The brackets on the wall allow for zero movement side to side - zero, so you need to be right on w/ the rear brackets or at least find your holes using where the brackets are on the wall and not where your cabinets are (side to side), if that makes sense.  If you have an old GE microwave, the bracket will likely be the same (as mine were), but the upper cabinet holes' location were different.