if you do more portraits, get the canon. landscape wise i prefer to use the nikon.
or u might wanna look at more pics reference online and see which tones u prefer.
curves from a canon and nikon is different cause of the ccd and how they process those colours. i was at an apple concept store not in singapore scrolling through few hundred pics from iphoto, i can almost tell almost all canon pics from nikon,sony,etc.
some guys will tell you that you can simulate the same curves, but is it worth the extra effort.
I am a nikon user fyi.