I think the problem with the Em is that it really is kind of like the Canon T50 - a glorified point and shoot with the benefit of using world class lenses. You are the mercy of its auto exposure calculations (which apparently are not all that bad, form what I hear - but do not replace the lack of control), and you probably noticed that this kind of set up is limiting when trying to delve a little more into photography. They don't fetch much of a price, but are compact and reliable, so I would say keep it as a just incase back up if you plan to stick with Nikon (which is not a bad idea at all!).