What I hate about cast iron is uneven cooking. I love my large 12" cast iron skillet but there is so much variance in temperature that I find myself preheating first in the oven. I do have a long burner but its meant more for a long griddle so I still find find food cooking unevenly at the sides. While I would use it for high heat searing, roasting 4 cornish hens or 2 chickens, its one of the reasons I would never make something like pancakes in it. Ideally, the burner should be no more than one inch smaller than the pan you are using. Problem is, I have yet to see burners of this size.