I sort have 2 , first I carry a small gas stove, the one with it's own gas container, on which I use the griddle pan. This is useful when there are you the two of us and we want a couple of steaks, chops, burgers or fish and don't want the mess in the van.
I also have a folding charcoal bbq in which I tend to use the bags you just light the whole thing so it's very much like a disposable bbq but you can use it as a small fire pit as well.
As you can see I'm not into the whole bbq ritual, I tend to just want to cook a few thins outside, also space is at a premium so what ever I carry has to be small and preferably dual purpose.