I would go for Canon or Nikon, because what you want to use the camera for now may change once you get the bug
Steve is spot on it's how the camera feels in your hands, because the quality is "there" with both cameras. Most Canon users will say Canon is better and most Nikon users will say they are better:
I know what your going through coz I took 18 months to make my mind up
anyway I settled for Canon coz they are the best