This is actually a difficult choice because both have pros and cons.
Completely ignoring any unannounced exclusives, the PS4 is simply the better machine for traditional controller based videogames - this is down to its superior internal hardware.
However when it comes to extras, like Movies, Music, TV support and handfree controllers and videogames, the XBONE is the winner here - it's Kinect hardware and software tech simply outclasses what Sony have no offer with its Eye.
If your intention is to use your console as a multimedia, complete home theatre system that can take control of many platforms and services and also give you access to some neat software tech go for the XBONE
If your intention is to simply play tradtional console videogames, go for the PS4
If your intention is both of the above, get both consoles, the PS4 can plug into the XBONE's ports and you can then run everything off one interface.