Xbox 1 is currently IMO above the PS4 in both release and future release titles. Support from MS is also slightly less annoying than PS.

If it was pre 360 era gaming i would demand PS over MS due to the best games from Japan only being ported to PS but they seem to finally start porting all the way around, even to the Wii U for some of the more unique ports.

All in all depends if you prefer shooters/action games or RPGs(JRPGs)