I Am A Nikon

I've been thinking for some time whether I should invest in an SLR. The image quality of my old camera doesn't really exist. That's why I've asked a friend if he can recommend me one. Then he sent me the link to Nikon D5100 and I'm pretty impressed. Here are some details:

Images by Nikon

What do you think? Shall I take? Or which camera would you recommend?