I am new to owning an IPhone 4 and have the option for HDR on when I take photos. Now there are two of every photo. Is the second image the better one always? When I asked this of some people, they said not necessarily, and I thought I would bring the question here to get your thoughts on your favorite preferences for taking photos with your IPhone. Even if you don't have one, or did in the past, maybe you have some thoughts?