Before my Imac 27 , I had a HP touchsmart PC. I can honestly say from experience that the touchscreen is useless. And when your dealing with a 27" Imac which is siting 2 to 3 feet away from you trying to touch the screen wouldn't be convenient.
While a touch screen is useful in a Macbook Pro or Iphone forget about being useful in an Imac.
While a touch screen is useful in a Macbook Pro or Iphone forget about being useful in an Imac.