OVER PS4, never.
Reasons: Lack of multimedia features on Europe, less powerful for multis, non-interest on Kinect, lack of interest on their exclusive catalog (I already have a PC for Titanfall), knowing that most of the future JRPG and other japanese games will be exclusive on PS4, I already have a small PS4 library with PSPlus, more interest in PS4 exclusive games, I also got a Vita, most of my friends are (or will be) on PS4...
A console is something that you'll use during 4-5 years, and you will end spending much more money after buying the console (subscriptions, games, accesories) than in the console itself. It don't have sense to buy the console that you like less only because is 100 or even 200€ cheaper.
As a second next-gen console, to play the few exclusives that interest me? Probably 4 years from here, when I could find a XB1 for less than 200€ and I got a lot of cheap games to play.