Hi again, another newbe question; I've tried search without success so here is my question. When finished with the iPad is it better to Power Down or just allow it to 'Sleep'. My case has the 'Sleep' capacity but I wonder if when leaving the iPad for many hours, overnight and/or when not in use for a day or two which is the best option? I did see the advice that one should allow the iPad to run right down once a month before charging to allow better results. Thank you.