DSLR Camera,

I am quite dillema which DSLR is best in comparision to Nikon D90 or Nikon D7000. or should i go for Canon which Model.
i heard Nikon lens is far better than other lens. My budgets is ranges from A$ 1000-A$1600.
Please shaja expert help me out to find best camera, and this is my first investment in DSLR and i m not professional but my hobby.