Choose the system that will best suit you and your gaming taste. XV is going to play the same in both versions and the PS4 version might be a little prettier and smoother, but that won't mean much to you if you're into competitive play and all your buddies are over on Live having the time of their lives without you. I would also consider what else the system has to offer. My hesitation into jumping into the next generation is due to a lack of games on that "must play" list for any of the systems. You wouldn't want to pick one system only to find out its library is not up to par with your needs.