The linked video is really good. I watched it before i bought my nx200. I like the wifi but unless you have a fast connection it is pointless. Its ok for all the Koreans with super fast connections but myself with 2mb max-no point!
Also the price of the nx210 is massive compared to the nx200 and its basically the same camera.
The remote tablet control is pretty cool though.
Of course if i had fast connection i would prob upgrade for the convinience side of it.