This depends on a lot of things, such as how many people will be on your trips, and how often you’re going to use the camping stove. There are larger freestanding ones with lots of cooking room, multiple burning eyes, and extra accessories. Then, there are the more recognizable two burner camping stoves that are very portable and sometimes can have up to 30,000 BTUs. They usually function just fine on a flat surface or table.
If you have less than 5 people in your group, then a two burner stove with a large propane tank should prepare enough food, and be just fine to use for your entire camping trip. If you have a little more people than that, then you will probably need more space, and the free-standing camping stoves normally provide that.