It all depends! If you have access to wood and want to travel light get a small metal grate. If you want to get fancy and reduce your visibility get a rocket stove or learn to build a dakota fire hole. Next after that, I'd look for a butane stove and plan to get 150% of the bottles you think you will need. If you think it may be for more than a few days, it may be wiser to try a white gas stove, it's easier to carry more fuel in one large gallon sized container along with two gas bottles to pump up (incase one gets a damaged o-ring). Lastly, if you think you'll want to cook for more people or don't plan on moving, a propane stove might be a better choice, bottles come in all sizes.