Hey, epicgameman here, For Xbox one, you will have to pay a number of fees on it, 1.) You will have to pay for xbox live. 2.) You will have to pay fees for your preowned games, so you will be charged for playing your old games.
On the other hand, the PlayStation 4 will I think have no fees in it, PSN is free again.
Overall guys, go for the PS4, it's £80 more cheaper and it's online features are completly free.