Hmmmm that's a tough one - Personally I would say PS4 rather than the XboxOne, due to several reasons : -
1) I think the PS4 looks nicer (I know a silly point to start with but nevermind)
2) When the PS4 came out they had a lot more exclusive titles which I was interested in
3) The graphics on the PS4 look, in my opinion on par or better than the graphics of the XboxOne
4) PS4 offers users a wide selection of games, and allows you to play older titles via PlayStationNow - the only down side to this is you have to pay for that
5) PS4's ease of use - and having built in batteries with the controllers, instead of needing AA batteries
Those are just some of the reasons why I would rate and prefer the PS4 over the Xbox. I am interested to hear everyone else's opinions below