Vizio CN15 15.6-inch laptop or Vizio CT14/C15 ultrabooks?

I am a video editor and looking for a great laptop or ultrabook which is excellent at speed and performance. I came across that Vizio released new products, which is Vizio CN15 15.6-inch laptop and Vizio CT14/C15 ultrabooks. Can you recommend me, which one is better to choose?
