What digital camera do I buy?

I'm going to be making a professional video for my friends company and I wanted to know what camera you think I should buy and why? I'm more focused on videotaping than taking photography…

Nikon D600 24-Megapixel DSLR Camera

OR the

Canon EOS 5D Mark II - 21 Megapixel Digital SLR

Professional video makers use video cameras, not dSLR's with a video feature,

When shooting any camera, you need to consider which camera system you want?

Just logic will tell you that the older Canon 5D, Mark II will have older technology, so what do you think?

http://www.luminous-landscape.com/reviews/camcorders/cam-cam.shtml

If you are asking about the performance of the two sensors, then you need to look at those sensors compared head to head, but remember, video only uses 2 mp of a still cameras sensor