What is a great camera for outdoor photography and close ups?

Hi, i'm just wondering what camera would professional photographers and people in photography recommend for outdoor photography and close ups. I'm more of a Nikon fan, just cause i know how to use it more, so can i get some recommendations for Nikon cameras.

I use either a Nikon D300 or D3 when shooting outdoors. I add a macro lens when I shoot close-ups
You don't have to spend the kind of money for those cameras. Instead look at the Nikon D3200. Its sensor outperforms my D300. You will still need a macro lens for shooting close-ups, like the Nikkor AF-S 60 mm f/2.8
- What camera would be better for macros/ close ups?
- What Nikkor lens is affordable yet great for sports and outdoor photography?
- What type of lens is good for portraits/close ups? (Nikon)?
- I want to buy a lens for my Nikon D3100 to take close ups, the cheapest one?
- Canon EOS 40D, or Nikon D70 - for night (low light), medium shots & close-ups?