I bought the D5000 about a year ago to use as a travel camera. I like it, but I am considering selling it to get the 5100 because there are a few things I think I would like better on the newer model. I like the screen options, but would much rather have it go to the side instead of down like mine does. And there are some changes in the controls too.
I got to play with a friends 5100 and just liked it better. I have considered the 3200, but like someone else said, I think I am too used to having more control. I normally shoot with a D3 and it is sometimes hard to go from that to a more consumer friendly camera. I have several lenses I use with it. I am not overly impressed with the kit lens. I use my 18-105 Vr, 18-200 Vr, and 35mm.