which controller do you prefer?
which system has the exclusive games you prefer?
out of the two i would have to say ps4 looks better to me (since i've had ps3, ps2, ps1) but that is what i prefer.
both xb1 and ps4 have a severe lack of games right now though. both also cannot play previous gen. perhaps getting an older gen xb360 or ps3 would work better since you already have quite a few games available (and its not a dead system quite yet). your choice.