Long Version:
I voted grill, because that's what I prefer, but reality is that I'm usually using a 2 burner stove because it's more versatile for what I have to do when we camp out of the truck. Maybe one day I'll master the fine art of heat control using embers from the fire under a skillet on a rack but the stove suits me until then. I don't like pissing off the people I have to feed by experimenting/learning too much.
The stove also makes it easier for somebody else to substitute cook if needed. Even my wife can figure out how to heat soup on it without ruining it AND destroying the pot!
We use a small alcohol stove when we want to go light and only need to boil water to rehydrate things. I actually usually have it doing coffee duty no matter what other cooking method we use. The generic Amazon 'pocket rockets' also work well for this and already live in my emergency box.
Often, if dinner is meat, then it's steak strips or chunks, or brats, on sticks over the fire. Breakfast will then be eggs, sausage, bacon hash browns and whatever done in a skillet or griddle on the stove.
My next 2-person trip is probably going to be only the pocket rocket (pasta dinner, omelet bags b'fast) with some vegetables done in foil packs in the embers. Hopefully there'll be a fish to do in the fire instead of pasta one night.
Short Version:
Determine what you want to cook and how many mouths/how often you'll need to do it. Buy accordingly.