I remember back in the day when to pop popcorn in the microwave you'd set it for some ridiculous time and sit there and listen as the popcorn popped and began to slow down to some vague point where the popcorn was popping slowly so you'd stop it and then either find it all popped but burned or not burned but still some unpopped kernels in the bag. Now-days almost every microwave has a "popcorn" button that you set to the size of the bag, I think some microwaves have a sensor in them. So how does your microwave perform when it comes to the popcorn button/setting? Mine does... okay. I've the type where you tell it the bag size and it goes on a pre-set time. Usually I can easily leave the microwave and popcorn to its own devices without baysitting it and I get a mostly popped unburned bag. But, dammit, I'm still paying for those unpopped kernels and I want those popcorns!