don't forget you can also stream music/videos directly from your PC to the XBoxOne.
I have both and here are my views on it.
XBox 1:
Quieter
Controller has longer battery life (option for alkaline batteries or rechargeable ones)
Seamless multitasking operation
Voice/Kinect worked quite well for me, recognising most of my commands
Console has to be sat flat, can't be put upright like a PS4/3
No problems playing CDs however can't recognise media CDs/data CDs
Interface is much more pleasant but I wish there is more content to check out online (XBoxlive do sometimes have feature stories time to time)
Console doesn't get too hot
Kinect is pretty useful (i.e. scanning codes rather than typing in)
PS4:
Disc spinning is still quite loud
Has a familiar feel to the overall system coming from PS3
Start up is quick
PS video live is easily accessible (can't be arsed to launch twitch on Xbox1)
Can't play CDs still (wtf)
Typing using the controller swipe pad is pretty cool
Battery on controller has to be charged quite often despite dimming the LED light (probably lasts me a day)
PS store still looks like a mess
Both game equally well and can't tell the differences graphically (could be marginal)
I have no preference on either one. Got both partly so I can play its exclusives (Titanfall, Forza, DriveClub)