My elderly microwave oven needs replacing, it's developing rust spots inside and the light bulb is not a user-replaceable item, it stopped working about 10 months ago. I'm investigating flatbed inverter devices at present, inverter microwaves have actual variable power outputs rarther than just cycling on and off. Flatbed ones have no rotating platter, instead the emitter antenna rotates. Lack of a platter means it's easier to wipe up spills, too.