I have cast iron as I tend to travel heavy and nothing beats cast iron for cooking in my mind. But I also have a large non stick pan/dutch oven sort of pan that I use. It goes in a large trash bag with a foam cutout inside to protect the teflon coating. I can do without those flecks of chemicals in my food. Ha.
I also have a 10" cast iron skillet with lid. I'm thinking about getting a dutch oven with legs too.