Thinking about buying a camera.suggestions?

I'm thinking of buying a professional camera pretty soon. Anyone have any suggestions? I'm seriously thinking of the Nikon D3100:)

Professional cameras start about $4, 000-. The Nikon D3100 is a very fine entry level DSLR.

Check out this blog, it listed out top rated and under $500 DSLR camera to buy: http://lovetosharethis.blogspot.com/2011/07/best-digital-slr-camera-under-500.html

The D3100 is the latest incarnation of a line of cameras that - if we're brutally honest - we find a bit annoying. In an effort not to bamboozle first-time SLR users, it presents most photographic options via the LCD screen and navigation pad. That might feel familiar for compact camera owners, but are labelled buttons really so terrifying? We much prefer controls that keep key settings within easy reach and encourage experimentation.