Always assume that the day will come in which you view one of your images and you see one that is absolutely breathtaking and you want to print it or crop it or something. You will wish for the absolute best in the starting photo. Set your camera for RAW or RAW + JPG with the largest and finest possible settings. If that requires a larger, more expensive memory card, so be it. Then, when THAT picture comes along, you won't find yourself wishing you had a better starting point.