I'm considering the D5100 as a vacation DSLR due to its lighter weight and smaller body. I also like the idea of having an articulating screen available for self portraits on a mini tripod. I have a Nikon 18-200 lens that I can pair with it. Any input from those that have done the same? Is this a good choice and match? I'll have a Canon S100 as a secondary camera.
As a side note, I do already own a D3S. I'm just looking for something lighter, yet capable of generating great vacation pics.