Agreed that the D3200 has the highest resolution among APS-C cameras but the same attribute brings in a BIG negative. Recently I got the opportunity to go through some RAW files from the camera and even at ISO 400, noise is noticeable. On the other hand, I have heard that the D5100 does fine even at ISO 800. If I were to choose between the two, it would be the D5100 with some margin to spare as it shares it's sensor technology with Nikon's own D7000 which has proven itself to be better than any other camera in its segment.