Cutting board finish: plain mineral oil, board butter, or hardwax oil?

Making a few end-grain boards as holiday gifts and I keep going back and forth on the finish. Mineral oil is cheap and easy to reapply, board butter (oil + beeswax) feels nicer, and some people swear by food-safe hardwax oils that last longer but are harder for the recipient to maintain. What do you use, and what do you tell people about re-oiling when you give one away?