The body is not as important as you think. You are buying into a system. Canon vs Nikon will be argued as long as they both exist. Determine your needs/wants and then analyse the possibilities with different brands. Money is a concern for most people. I went with Canon because they had the lenses and camera combinations that fit what I wanted at several hundred dollars cheaper than Nikon. I have not regretted my decision.
One piece of advice: Do not spend so much money on the body you don't have the money left to get quality lenses. A good body deserves or maybe even requires a very good lens. Plan to spend more on lenses than the body.