I love my new D800
I was in the same place your in now.
If its low light you want go Canon.
If its dynamic range and great colour go Nikon.
I also don't like Canon's controls for the camera.
I needed the roller controls on the back and front.
But Canon has a better standard zoom lens than Nikon.
A camera is only good as the glass in front of it.
They are incredible cameras. Both will make you say....
Wow! At the end of the day.