The S6 has a very nice screen and wi-fi. I've used every coolpix model out there and have to say it's a nice camera, but I'd rather go with the S5 if you like the slim type. The wi-fi is still a gimmick (in 1 or 2 generations it will be worth something maybe, but right now it's just something to brag about to your friends).
But, as I usually don't like slim cameras (worse optical qualities), I may recommend the coolpix P4, it's a bit bulkier but has a better, longer lens (with ED glass
), VR (vibration reduction) and an aperture priority mode.
It should be around $399 in the street...
EDIT: About the dual-lense in the Kodak, in order to save space they use 2 different lenses like say a 35-105mm and a 120-200mm (I'm totally making up the values). The camera switches between these lenses while you zoom. I haven't used the camera, but the reviews I read weren't that great (If I recall correctly you loose some of the intermediate focal lenghts and the switching is not as smooth).
That being said, if you have a chance to try them at a store, by all means do so. Compact digitals are similar enough (from a technical point of view) that the qualities that really define them and may give one an edge over the other are very personal (the button layout, different scene modes, size, etc). Don't let Megapixels and zoom Xs blind you. Buy the one you are most comfortable with.