As a PS4/WiiU/XBO owner (basically all of the 7th and 8th gen consoles), this is what I own on PS4 and XBO. I can buy whatever I want whenever I want but, of course, I only buy what appeals to me.
Games available on one and not the other:
XBO
-Gears of War Ultimate Edition
-Titanfall
-Dead Rising 3
-Forza Horizon 2
-Rise of the Tomb Raider
-Ryse Son of Rome
-Sunset Overdrive
-Halo MCC
-Quantum Break
PS4
-inFamous Second Son (and First Light)
-The Last of Us
-Onechanbara Z
-Until Dawn
-Gravity Rush
-Street Fighter V
-The Order 1886
I typically buy third party games on PS4 unless there's no notable difference. Then I get the XBO version solely because I prefer their screenshot/game DVR setup. Both are totally awesome, though. This gen has improved greatly. Last year this time, I was really unhappy. It's still not as good as 7th gen but it's not bad.
*edit* I have tons of digital only titles, too!
