Everything I have read in this thread says buy a good body and go from there. I wouldn't recommend that I would say buy a great lens and a cheap body. Instead of spend several thousand dollars on a body spend it on a lens or two for what you want to shoot. The bodies will depreciate fast but the lenses will be top of the line for a long time. I currently shoot with a d40 and a d300. I have shot some of my best pics with the D40. If you attach a good lens to it you can do great things. Sure the d300 is a better camera but 90% of the time I don't know the difference. If you have never been into photography before by the time you figure out what your doing your high end body will be outdated and you will want to update anyway. If going Nikon start with a 24-70 2.8 and a cheap body. If you take care of the lens it will still be worth most of its original value. Then if you upgrade to fx, which you will want to do if you stay in it you already have the first lens. At that point you will know which direction your photography is going. Just remember that the old models made excellent pictures when that was all you could get.
You need have skills to make it work for you.
You need have skills to make it work for you.