Which grilled cheese sandwich is better? one made in a cast iron skillet or one cooked in a microwave oven?

I use to swear by grilled cheese sandwiches made in a cast iron skillet. This was the only way my mother prepared them. Then came the microwave oven and changed everything, except how my mother continued to prepare a grilled cheese sandwich, the old-fashioned way. I have tried both and they just about taste the same. The cast iron version seems to have a little more taste, compared to the version cooked in a microwave oven. Qustion: please give your version of a grilled cheese sandwich and why do you choose your version of preparing one?