Nikon & Canon
not Nikon & Sony
I shoot Nikon, friends shoot Nikon and Canon, family shoot Canon.
The verdict: Either of the 2 I mentioned are both good, with ups and downs compared to lens choices ect.
Nikon is more expensive as it stands yet Canon has a larger arsenal.
Nikon has more Megapixels at this point in time, it's argued that Canon has faster glass... So there are naturally pro's and cons.
I like my Nikon, even though I initially wanted a Canon myself.