I have just read a book by national geographic. In this book they write about many of the photographer of the mag. I noticed that all of the people they interviewed use camera setups that cost less than a thousand dollars. I really think to take a good picture you need an excellent understanding of light and how to use it to get what you want. This does not mean you can't get the pictures you want with expensive cameras. I have a D70 with a sb600 and a few lenses. So I have spent a fair amount of money and am not a pro photographer. An artistic eye will go the distance in photography. All this babbling is just my opinion though.