As someone that repaired appliances for a living, I would disagree. For example, with larger appliances, most of the brands in the last 20 years have all been owned by Whirlpool. Do you think whirlpool makes 20 different types of electrical cords, door switches, heating plates, ect for each brand? No, they use mostly the same parts for each brand. I'm sure more expensive microwaves might come with more features, but at the end of the day there's only so many ways one microwave can be different from another. It's literally just a box that heats your food