I want a camera that's very good in low light situations, a camera that can take fast movements pictures (example: taking pictures of someone on a whitewater rafting), weddings, portraits, scenery.
  Which one will be best? I'm starting a new venture as a photographer but do not have enough money to buy the best and expensive camera. Please help me with suggestions. Thanks in advance.
  >>> Which one: Canon EOS 60D DSLR or Nikon's D7000?