Canon 7D Mark II. A GREAT crop sensor camera, arguably the best on
market right now. And you will get an argument depending on who you ask. Sony is credited with the best sensor on the market. The new Mark II still has a slightly inferior sensor, but now has two logic chips that help offset the difference in the sensor. The dual chips bump the camera to 10fps with zero buffer lag. Nikon has outstanding performance and is never a bad choice. A lot of Canon and Nikon users have been recently moving to the Sony because of the improved sensor. However, Sony has a smaller third party vendor support. I would recommend physically holding all of the brands you consider in your hands. I much, much prefer the feel and location of the Canon bodies and buttons/knobs. If you are not accustomed to the size and weight of a professional camera, especially a top end full frame sensor body, you may find a smaller format camera like what is found in Sam's or Costco a better fit. The lenses will still work on the bigger format cameras if you upgrade later. The newer small format with full size lens mount may suit you to your satisfaction. You lose speed and efficiency in making on the fly changes as you compose your shot, but you still have high quality lens options. Also, these small formats have more options in brands to choose from.