So I have a question about the megapixels. Consumer reports rates the Nikon D3200, with 24 mp equal to the D3100 at 14 mp, and one point above the D5100 at 16 mp. Can anyone explain what to look for with megapixels as relates to picture quality? It might be splitting hairs, but I would like to understand. Also, any practical advice as between the 3 models would be appreciated.

@Markb, do you think the 5100 has better low light performance than either of the other two Nikons, or just that Nikon does a good job there?

Thanks!