All I have ever used, for 37 years now, is an air popper, so I don't know the difference between microwave and air poppers. Obviously I am very happy with the air popper, am on my third one of the same brand/model. I pop 1/2 cup of kernels, makes a lot of popcporn!, and then drizzle on melted butter to make the nutritional yeast stick. I buy the kernels in bulk, or in those plastic bags at the grocery, like they sell dried beans in. I make pop corn at least once a week.
Never doubt that a small group of thoughtful, committed citizens can change the world. Indeed, it is the only thing that ever has. Margaret Mead